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四川建筑香雪梅大理石廠

2021-08-13
四川建筑香雪梅大理石廠

噪(zao)(zao)音(yin)所產(chan)(chan)(chan)生(sheng)(sheng)(sheng)的(de)(de)(de)(de)危害是比較(jiao)大的(de)(de)(de)(de),尤其(qi)是表現在(zai)(zai)如下幾(ji)個(ge)方面:1、長(chang)期在(zai)(zai)強烈的(de)(de)(de)(de)噪(zao)(zao)音(yin)環(huan)境中(zhong)(zhong)工(gong)作(zuo),可以使(shi)人產(chan)(chan)(chan)生(sheng)(sheng)(sheng)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)性耳聾。2、影響人們的(de)(de)(de)(de)正常工(gong)作(zuo)、學習(xi)及(ji)日常生(sheng)(sheng)(sheng)活(huo)。那么(me)石材加工(gong)過程中(zhong)(zhong)噪(zao)(zao)音(yin)是怎樣產(chan)(chan)(chan)生(sheng)(sheng)(sheng)的(de)(de)(de)(de)呢?它(ta)主要(yao)來自齒(chi)(chi)(chi)尖(jian)(jian)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng),鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)振(zhen)動及(ji)物料摩擦聲(sheng)(sheng)(sheng)(sheng)(sheng)。齒(chi)(chi)(chi)尖(jian)(jian)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng):是當(dang)(dang)鋸(ju)(ju)(ju)片(pian)(pian)(pian)高(gao)速(su)(su)(su)運轉(zhuan)(zhuan)時(shi),鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)鋸(ju)(ju)(ju)齒(chi)(chi)(chi)與周圍(wei)的(de)(de)(de)(de)空(kong)氣(qi)相互(hu)作(zuo)用,引起空(kong)氣(qi)的(de)(de)(de)(de)壓力脈動而產(chan)(chan)(chan)生(sheng)(sheng)(sheng)的(de)(de)(de)(de)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)。齒(chi)(chi)(chi)尖(jian)(jian)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)功率(lv)與鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)直徑、鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)線速(su)(su)(su)度(du)(du)的(de)(de)(de)(de)三次方成正比,當(dang)(dang)轉(zhuan)(zhuan)速(su)(su)(su)越(yue)低(di)時(shi),與其(qi)線速(su)(su)(su)度(du)(du)三次方成正比,齒(chi)(chi)(chi)尖(jian)(jian)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)頻(pin)率(lv)可由(you)下式計算:式中(zhong)(zhong):fi—齒(chi)(chi)(chi)尖(jian)(jian)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)率(lv),即鋸(ju)(ju)(ju)齒(chi)(chi)(chi)每(mei)秒打空(kong)氣(qi)質點的(de)(de)(de)(de)次數,(HZ)z—鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)齒(chi)(chi)(chi)數(個(ge))n—鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)軸的(de)(de)(de)(de)轉(zhuan)(zhuan)速(su)(su)(su)(r/min)i—諧波序號(hao)i=1、2、3……鋸(ju)(ju)(ju)片(pian)(pian)(pian)旋(xuan)轉(zhuan)(zhuan)時(shi),每(mei)個(ge)齒(chi)(chi)(chi)尖(jian)(jian)產(chan)(chan)(chan)生(sheng)(sheng)(sheng)單極輻射流,并周期地(di)通過工(gong)作(zuo)臺的(de)(de)(de)(de)鋸(ju)(ju)(ju)縫向外排(pai)(pai)出,由(you)于(yu)(yu)氣(qi)流壓力發生(sheng)(sheng)(sheng)激烈變化,隨(sui)之(zhi)產(chan)(chan)(chan)生(sheng)(sheng)(sheng)排(pai)(pai)氣(qi)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng),排(pai)(pai)氣(qi)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)升功率(lv)也隨(sui)著鋸(ju)(ju)(ju)片(pian)(pian)(pian)線速(su)(su)(su)度(du)(du)增大而急劇增加,它(ta)與氣(qi)流速(su)(su)(su)度(du)(du)的(de)(de)(de)(de)6次方成正比,在(zai)(zai)線速(su)(su)(su)度(du)(du)較(jiao)小時(shi),與其(qi)5次方成正比,則(ze)排(pai)(pai)氣(qi)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)率(lv)為:式中(zhong)(zhong):fi—排(pai)(pai)氣(qi)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)率(lv),(HZ)z—鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)齒(chi)(chi)(chi)數(個(ge))n—鋸(ju)(ju)(ju)片(pian)(pian)(pian)軸的(de)(de)(de)(de)轉(zhuan)(zhuan)速(su)(su)(su)(r/min)i—諧波序號(hao)i=1、2、3……在(zai)(zai)鋸(ju)(ju)(ju)片(pian)(pian)(pian)高(gao)速(su)(su)(su)旋(xuan)轉(zhuan)(zhuan)時(shi),每(mei)當(dang)(dang)渦流分離的(de)(de)(de)(de)頻(pin)率(lv)與鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)固有(you)頻(pin)率(lv)相近時(shi),就發生(sheng)(sheng)(sheng)共振(zhen),便(bian)發出“尖(jian)(jian)叫聲(sheng)(sheng)(sheng)(sheng)(sheng)”,其(qi)頻(pin)率(lv)為:f=z fr式中(zhong)(zhong):z—鋸(ju)(ju)(ju)片(pian)(pian)(pian)的(de)(de)(de)(de)齒(chi)(chi)(chi)數(個(ge))fr—軸回轉(zhuan)(zhuan)頻(pin)率(lv)(HZ)鋸(ju)(ju)(ju)片(pian)(pian)(pian)屬(shu)于(yu)(yu)薄壁件(jian),其(qi)剛性一(yi)般較(jiao)差(cha),在(zai)(zai)外力的(de)(de)(de)(de)作(zuo)用下很容易(yi)產(chan)(chan)(chan)生(sheng)(sheng)(sheng)振(zhen)動,由(you)于(yu)(yu)振(zhen)動便(bian)容易(yi)產(chan)(chan)(chan)生(sheng)(sheng)(sheng)物料的(de)(de)(de)(de)摩擦,因此該類的(de)(de)(de)(de)噪(zao)(zao)音(yin)也就隨(sui)之(zhi)產(chan)(chan)(chan)生(sheng)(sheng)(sheng)。

四川建筑香雪梅大理石廠

一(yi)觀(guan):肉眼(yan)觀(guan)察石(shi)材(cai)的(de)表(biao)面結構石(shi)材(cai)的(de)好壞肉眼(yan)即能(neng)分辨,好的(de)石(shi)材(cai)表(biao)面細(xi)(xi)致(zhi)光(guang)滑,質(zhi)量(liang)(liang)差的(de)石(shi)材(cai)表(biao)面粗(cu)糙不(bu)(bu)平,表(biao)面呈顆粒狀組合(he)(he)。此外(wai),石(shi)材(cai)邊緣(yuan)也(ye)要仔細(xi)(xi)觀(guan)察,是(shi)(shi)否有(you)缺口,細(xi)(xi)微的(de)裂(lie)痕(hen)等,對日后使用有(you)著(zhu)不(bu)(bu)小的(de)影響。二(er)量(liang)(liang):量(liang)(liang)石(shi)材(cai)的(de)尺寸(cun)(cun)(cun)規(gui)格在(zai)(zai)(zai)買(mai)(mai)石(shi)材(cai)之前(qian),一(yi)定要先(xian)量(liang)(liang)好裝修尺寸(cun)(cun)(cun),然后購買(mai)(mai)石(shi)材(cai)時(shi)也(ye)要對石(shi)材(cai)進行測量(liang)(liang),一(yi)定要買(mai)(mai)合(he)(he)適(shi)尺寸(cun)(cun)(cun)的(de),以(yi)免后續(xu)石(shi)材(cai)不(bu)(bu)夠需要拼接,這(zhe)樣極其(qi)影響美觀(guan)度。三(san)聽:聽石(shi)材(cai)的(de)敲(qiao)擊聲(sheng)音(yin)一(yi)般好的(de)石(shi)材(cai)敲(qiao)擊起(qi)來(lai)(lai)聲(sheng)音(yin)十分清脆,原因(yin)是(shi)(shi)石(shi)材(cai)內(nei)部質(zhi)地(di)均勻無裂(lie)隙;相反(fan),質(zhi)量(liang)(liang)不(bu)(bu)好的(de)石(shi)材(cai)敲(qiao)擊聲(sheng)音(yin)相當粗(cu)啞,因(yin)其(qi)質(zhi)地(di)不(bu)(bu)勻且里面很(hen)可(ke)能(neng)存在(zai)(zai)(zai)裂(lie)隙。四試:用簡單的(de)試驗(yan)(yan)方(fang)法(fa)來(lai)(lai)檢驗(yan)(yan)石(shi)材(cai)質(zhi)量(liang)(liang)好壞墨(mo)水(shui)滴(di)滲法(fa)是(shi)(shi)很(hen)常用的(de)檢驗(yan)(yan)石(shi)材(cai)質(zhi)量(liang)(liang)的(de)方(fang)法(fa),將一(yi)小滴(di)墨(mo)水(shui)滴(di)在(zai)(zai)(zai)石(shi)材(cai)背面,若深入(ru)石(shi)材(cai)內(nei)部則說明石(shi)材(cai)質(zhi)地(di)不(bu)(bu)細(xi)(xi)致(zhi),是(shi)(shi)質(zhi)量(liang)(liang)差的(de)石(shi)材(cai),反(fan)之,若不(bu)(bu)能(neng)滲入(ru)則說面石(shi)材(cai)質(zhi)量(liang)(liang)較好。

四川建筑香雪梅大理石廠

四川建筑香雪梅大理石通常在(zai)(zai)石(shi)(shi)(shi)材(cai)(cai)(cai)的(de)背面滴(di)上一(yi)小滴(di)墨水,如墨水很快(kuai)四處(chu)分散浸出,即(ji)表(biao)示(shi)石(shi)(shi)(shi)材(cai)(cai)(cai)內部(bu)顆粒(li)較松或(huo)存在(zai)(zai)顯微裂隙,石(shi)(shi)(shi)材(cai)(cai)(cai)質量不好;反之(zhi),若墨水滴(di)在(zai)(zai)原處(chu)不動,則說明(ming)石(shi)(shi)(shi)材(cai)(cai)(cai)致密質地好。青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)材(cai)(cai)(cai)的(de)安裝重慶(qing)青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)材(cai)(cai)(cai)具有(you)一(yi)定的(de)特性,耐凍,易(yi)加工(gong),那么隨著它在(zai)(zai)建筑行業的(de)廣泛應(ying)用,如今已經成為(wei)(wei)大眾(zhong)關(guan)注的(de)焦點,今天重慶(qing)青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)材(cai)(cai)(cai)帶您來(lai)看(kan)一(yi)下:關(guan)于青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)材(cai)(cai)(cai)安裝的(de)有(you)關(guan)介紹(shao),希(xi)望以下的(de)介紹(shao)對石(shi)(shi)(shi)材(cai)(cai)(cai)加工(gong)的(de)朋友能有(you)所幫助。1、在(zai)(zai)安裝青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)之(zhi)前(qian),先要(yao)做好準備工(gong)作(zuo)。要(yao)根據施工(gong)大樣圖和(he)加工(gong)單為(wei)(wei)依據,同時還(huan)要(yao)了解各部(bu)位尺(chi)寸的(de)大小和(he)做法,了解清楚邊角、弧位等部(bu)位之(zhi)間的(de)關(guan)系(xi)。2、在(zai)(zai)正式鋪沒(mei)之(zhi)前(qian),要(yao)把青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)按圖案(an)、紋理、顏色鮮使(shi)拼好,重慶(qing)青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)材(cai)(cai)(cai)然后再講非整(zheng)(zheng)塊的(de)青(qing)(qing)石(shi)(shi)(shi)板(ban)(ban)(ban)對稱的(de)放在(zai)(zai)邊沿的(de)部(bu)位,之(zhi)后在(zai)(zai)按兩個方向編號的(de)排(pai)列和(he)放整(zheng)(zheng)齊。

四川建筑香雪梅大理石廠

加(jia)裝隔聲罩(zhao)(zhao)(zhao)用(yong)(yong)(yong)隔聲罩(zhao)(zhao)(zhao)來降(jiang)低(di)鋸片(pian)加(jia)工時(shi)的(de)(de)綜(zong)合(he)噪(zao)(zao)聲是行之有效的(de)(de),罩(zhao)(zhao)(zhao)殼用(yong)(yong)(yong)鋼(gang)板制成,內涂阻尼材(cai)(cai)料、吸(xi)聲材(cai)(cai)料,選擇(ze)超細玻(bo)璃棉,襯一(yi)層玻(bo)璃布。并用(yong)(yong)(yong)穿孔板護面。罩(zhao)(zhao)(zhao)殼、吸(xi)聲材(cai)(cai)料、穿孔板相對固定以(yi)防(fang)止設(she)備運轉造(zao)(zao)(zao)(zao)成系(xi)統(tong)共(gong)振引(yin)起新的(de)(de)噪(zao)(zao)音(yin)。措(cuo)施(shi)(shi)與(yu)能達(da)到的(de)(de)降(jiang)噪(zao)(zao)效果(guo):(1)基體(ti)采用(yong)(yong)(yong)復(fu)合(he)結構可(ke)以(yi)降(jiang)噪(zao)(zao)10分貝左右(2)減(jian)振法蘭盤(pan)可(ke)以(yi)降(jiang)噪(zao)(zao)3分貝左右(3)基體(ti)采用(yong)(yong)(yong)消(xiao)音(yin)孔或消(xiao)音(yin)縫5分貝左右(4)整體(ti)隔音(yin)罩(zhao)(zhao)(zhao)10分貝左右簡(jian)析人(ren)造(zao)(zao)(zao)(zao)石(shi)的(de)(de)用(yong)(yong)(yong)途(tu)人(ren)造(zao)(zao)(zao)(zao)石(shi)材(cai)(cai)從(cong)誕生(sheng)至今經歷(li)幾(ji)十(shi)年的(de)(de)研究、開發和創新,使人(ren)造(zao)(zao)(zao)(zao)石(shi)材(cai)(cai)能開發多種(zhong)材(cai)(cai)料廣泛應用(yong)(yong)(yong)與(yu)商業、住宅、甚至軍事領域等。在商業用(yong)(yong)(yong)途(tu)上,人(ren)造(zao)(zao)(zao)(zao)石(shi)材(cai)(cai)的(de)(de)使用(yong)(yong)(yong)幾(ji)乎不受限制。根據產(chan)品的(de)(de)適(shi)應性,它可(ke)用(yong)(yong)(yong)于健康中(zhong)心、醫療機構、公(gong)共(gong)寫字樓(lou)、廠礦(kuang)公(gong)司(si)、購物中(zhong)心等空間里的(de)(de)設(she)備設(she)施(shi)(shi)。

四川建筑香雪梅大理石廠

清理(li)過程中,清縫片(pian)必須與石(shi)材(cai)(cai)(cai)保持90度(du)垂直,否則(ze)會(hui)導致(zhi)石(shi)材(cai)(cai)(cai)崩邊。石(shi)材(cai)(cai)(cai)拼(pin)花,是一(yi)種很(hen)精致(zhi)的(de)(de)(de)(de)(de)藝術品(pin)(pin)。以(yi)上(shang)注(zhu)意事項(xiang),旨在防止(zhi)破壞(huai)其(qi)整體(ti)裝飾效果(guo)。比如,清縫時切過頭或切串縫,很(hen)不(bu)美(mei)觀,影響裝飾效果(guo)。調(diao)膠標準將膠的(de)(de)(de)(de)(de)顏(yan)色(se)調(diao)到與石(shi)材(cai)(cai)(cai)顏(yan)色(se)高(gao)度(du)一(yi)致(zhi)。方法用云石(shi)膠+水(shui)膠或透(tou)明膠,不(bu)停攪拌,將膠調(diao)得稀一(yi)些。原因(yin)是拼(pin)花的(de)(de)(de)(de)(de)縫隙非(fei)常小(xiao),又(you)不(bu)能(neng)拓寬,必須增強膠的(de)(de)(de)(de)(de)流動(dong)性,才能(neng)有效的(de)(de)(de)(de)(de)滲入(ru)。技(ji)巧和注(zhu)意事項(xiang)加(jia)入(ru)天然(ran)色(se)粉(fen)在調(diao)整膠的(de)(de)(de)(de)(de)顏(yan)色(se)時,可視(shi)需求,加(jia)入(ru)天然(ran)的(de)(de)(de)(de)(de)無(wu)機色(se)粉(fen),如石(shi)粉(fen),是天然(ran)礦物中提取的(de)(de)(de)(de)(de)物質,可以(yi)達(da)到與石(shi)材(cai)(cai)(cai)顏(yan)色(se)非(fei)常接近的(de)(de)(de)(de)(de)效果(guo)。不(bu)推薦加(jia)入(ru)有機顏(yan)料(liao),原因(yin)是人(ren)工顏(yan)料(liao)的(de)(de)(de)(de)(de)色(se)澤(ze)比較純(chun)粹,無(wu)法很(hen)好(hao)的(de)(de)(de)(de)(de)模(mo)擬自(zi)然(ran)色(se)澤(ze)的(de)(de)(de)(de)(de)天然(ran)石(shi)材(cai)(cai)(cai)。選技(ji)術好(hao)的(de)(de)(de)(de)(de)工人(ren)要(yao)選擇操作熟練(lian),顏(yan)色(se)分(fen)辨能(neng)力強,又(you)有高(gao)度(du)的(de)(de)(de)(de)(de)責任心(xin)和耐心(xin)的(de)(de)(de)(de)(de)工人(ren),以(yi)對待藝術品(pin)(pin)的(de)(de)(de)(de)(de)態度(du)來(lai)操作。

四川建筑香雪梅大理石廠

毛邊(bian)石(shi)材加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)毛邊(bian)重慶石(shi)材加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)是根(gen)(gen)據計劃或(huo)(huo)用(yong)戶需(xu)要(yao),在已開(kai)(kai)掘或(huo)(huo)切開(kai)(kai)的(de)(de)塊(kuai)石(shi)、條(tiao)石(shi)、石(shi)板的(de)(de)外表(biao)進(jin)行(xing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)。加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)品種有粗鑿光(guang)(guang)(一步(bu)做鑿)、細鑿光(guang)(guang)(二(er)步(bu)做鑿,或(huo)(huo)稱點光(guang)(guang)、豆光(guang)(guang)、瞪砂(sha)地)、一斧(fu)光(guang)(guang)(一遍(bian)(bian)剁斧(fu))、二(er)斧(fu)光(guang)(guang)(二(er)遍(bian)(bian)剁斧(fu))、三(san)斧(fu)光(guang)(guang)(三(san)遍(bian)(bian)剁斧(fu))、機刨光(guang)(guang)、亞(ya)光(guang)(guang)(粗磨光(guang)(guang))、細磨光(guang)(guang)等幾(ji)種。傳(chuan)統(tong)的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)是在毛坯(pi)的(de)(de)塊(kuai)石(shi)(荒料)、條(tiao)石(shi)、石(shi)板的(de)(de)基礎上進(jin)行(xing)分品種、分層次加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong),根(gen)(gen)據用(yong)戶需(xu)要(yao)有粗鑿光(guang)(guang)至細磨光(guang)(guang)逐(zhu)遍(bian)(bian)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。例(li)如,用(yong)戶需(xu)要(yao)二(er)斧(fu)光(guang)(guang),須經粗鑿、細鑿、一遍(bian)(bian)斧(fu)、二(er)遍(bian)(bian)斧(fu)才行(xing)。根(gen)(gen)據用(yong)戶的(de)(de)需(xu)要(yao),重慶石(shi)材加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)主要(yao)由(you)以(yi)(yi)(yi)下幾(ji)種層次的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng):(1)毛坯(pi)的(de)(de)塊(kuai)石(shi)、條(tiao)石(shi)、石(shi)板筑(zhu)方的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)。(2)墻面(mian)(mian)線槽的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)。(3)線(腳)條(tiao)的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)。(4)圓形(xing)柱(zhu)(zhu)或(huo)(huo)柱(zhu)(zhu)座加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)(不管全體或(huo)(huo)拼裝)。(5)建(jian)筑(zhu)飾面(mian)(mian)的(de)(de)花飾、雕(diao)琢(即浮雕(diao)、圓雕(diao))。(6)蘑菇石(shi)與天(tian)然面(mian)(mian)(劈毛石(shi))的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)能(neng)(用(yong)塊(kuai)石(shi)、條(tiao)石(shi)制作(zuo))。重慶石(shi)材加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)為你解(jie)析傳(chuan)統(tong)的(de)(de)石(shi)材由(you)于(yu)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)設備和加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)技(ji)術捆綁,以(yi)(yi)(yi)及要(yao)作(zuo)為承重的(de)(de)構造構件(jian),所(suo)以(yi)(yi)(yi)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)出來的(de)(de)石(shi)材制品一般比照厚重、粗糙,但這(zhe)些(xie)石(shi)材制品難以(yi)(yi)(yi)日益翻開(kai)(kai)和精雕(diao)細鏤的(de)(de)需(xu)求。

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