
近(jin)年來中(zhong)國作為(wei)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)開采(cai)和(he)(he)(he)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)的(de)領頭國,生產(chan)240個品種(zhong)(zhong)的(de)花崗石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi),石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)總產(chan)量約占(zhan)(zhan)世界的(de)65%。在(zai)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)中(zhong),石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)占(zhan)(zhan)有(you)重要(yao)(yao)(yao)地位。石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)主(zhu)(zhu)(zhu)(zhu)要(yao)(yao)(yao)包括(kuo)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)鋸(ju)(ju)割(ge)、石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)磨(mo)削和(he)(he)(he)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)拋光(guang)。石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)主(zhu)(zhu)(zhu)(zhu)要(yao)(yao)(yao)采(cai)用(yong)金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)磨(mo)料和(he)(he)(he)陶瓷磨(mo)料。在(zai)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)中(zhong),鋸(ju)(ju)切(qie)(qie)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)是(shi)機械加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)的(de)一道工(gong)(gong)(gong)(gong)(gong)序,鋸(ju)(ju)切(qie)(qie)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)成(cheng)本(ben)占(zhan)(zhan)整個加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)成(cheng)本(ben)的(de)50%以上(shang)。目(mu)前,石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)等(deng)硬(ying)(ying)脆材(cai)(cai)(cai)(cai)(cai)料的(de)切(qie)(qie)割(ge)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)主(zhu)(zhu)(zhu)(zhu)要(yao)(yao)(yao)采(cai)用(yong)各種(zhong)(zhong)金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)切(qie)(qie)割(ge)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)。由(you)于金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)是(shi)自(zi)然界已知的(de)硬(ying)(ying)物質,其(qi)優異性能決(jue)定其(qi)在(zai)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)等(deng)硬(ying)(ying)脆材(cai)(cai)(cai)(cai)(cai)料切(qie)(qie)割(ge)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)領域(yu)具(ju)(ju)(ju)有(you)廣闊的(de)發展前景(jing)。應用(yong)金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)鋸(ju)(ju)切(qie)(qie)硬(ying)(ying)脆材(cai)(cai)(cai)(cai)(cai)料的(de)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)方式(shi)主(zhu)(zhu)(zhu)(zhu)要(yao)(yao)(yao)有(you)圓鋸(ju)(ju)片(pian)切(qie)(qie)割(ge)、金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)帶鋸(ju)(ju)切(qie)(qie)割(ge)、金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)框(kuang)架鋸(ju)(ju)切(qie)(qie)割(ge)、金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)串(chuan)珠繩鋸(ju)(ju)切(qie)(qie)割(ge)等(deng)。重慶石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)盡管每種(zhong)(zhong)方法有(you)不(bu)同的(de)特點和(he)(he)(he)應用(yong)范圍,但其(qi)切(qie)(qie)割(ge)機理(li)和(he)(he)(he)金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)磨(mo)損(sun)機理(li)卻大(da)致(zhi)相同。由(you)于切(qie)(qie)割(ge)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)是(shi)金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)切(qie)(qie)割(ge)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)主(zhu)(zhu)(zhu)(zhu)要(yao)(yao)(yao)的(de)用(yong)途,因此,深入研究石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)(cai)鋸(ju)(ju)切(qie)(qie)機理(li)和(he)(he)(he)金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)切(qie)(qie)割(ge)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)的(de)磨(mo)損(sun)機理(li)對于金(jin)(jin)剛(gang)(gang)(gang)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)切(qie)(qie)割(ge)工(gong)(gong)(gong)(gong)(gong)具(ju)(ju)(ju)的(de)合理(li)制造與(yu)正(zheng)確使用(yong)具(ju)(ju)(ju)有(you)重要(yao)(yao)(yao)意義。

辨識飾面石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)質(zhi)(zhi)量(liang)(liang)(liang)加工好(hao)(hao)的(de)成品飾面石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai),其(qi)(qi)質(zhi)(zhi)量(liang)(liang)(liang)好(hao)(hao)壞(huai)不可以(yi)從以(yi)下四(si)方(fang)面來(lai)(lai)鑒別;⑴觀,即肉眼觀察(cha)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)的(de)表面結構。一(yi)般說來(lai)(lai),均勻的(de)細(xi)料結構的(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)具有細(xi)膩的(de)質(zhi)(zhi)感,為石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)之佳品;粗粒(li)及(ji)不等粒(li)結構的(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)其(qi)(qi)外(wai)觀效(xiao)果(guo)(guo)較(jiao)差,重慶石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)欄桿機械力學性能也不均勻,質(zhi)(zhi)量(liang)(liang)(liang)稍(shao)差。另外(wai),天(tian)然石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)由于地質(zhi)(zhi)作用的(de)影(ying)響(xiang)常在其(qi)(qi)中(zhong)產生一(yi)些細(xi)脈、微(wei)裂(lie)(lie)(lie)隙,石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)易沿這些部位發生破裂(lie)(lie)(lie),應注意剔除。至于缺棱少(shao)角更是影(ying)響(xiang)美觀,選擇時尤應注意。⑵量(liang)(liang)(liang),即量(liang)(liang)(liang)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)的(de)尺寸規(gui)格(ge),重慶石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)欄桿以(yi)免影(ying)響(xiang)拼(pin)(pin)接,或造成拼(pin)(pin)接后的(de)圖(tu)案、花紋(wen)、線條變形,影(ying)響(xiang)裝飾效(xiao)果(guo)(guo)。⑶聽,即聽石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)的(de)敲擊聲音。一(yi)般而言,質(zhi)(zhi)量(liang)(liang)(liang)好(hao)(hao)的(de),內部致(zhi)密均勻且無顯(xian)微(wei)裂(lie)(lie)(lie)隙的(de)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai),其(qi)(qi)敲擊聲清脆悅耳;相反,若石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)內部存在顯(xian)微(wei)裂(lie)(lie)(lie)隙或細(xi)脈或因(yin)風(feng)化(hua)導致(zhi)顆粒(li)間接觸變松,則敲擊聲粗啞。⑷試,即用簡單的(de)試驗(yan)(yan)方(fang)法來(lai)(lai)檢驗(yan)(yan)石(shi)(shi)(shi)(shi)(shi)(shi)材(cai)(cai)(cai)(cai)質(zhi)(zhi)量(liang)(liang)(liang)好(hao)(hao)壞(huai)。

跟(gen)著(zhu)小城鎮特別(bie)是新(xin)鄉(xiang)村(cun)建(jian)筑(zhu)水平不(bu)斷前進(jin)(jin),締造的投入也將(jiang)加(jia)(jia)大(da)。無疑(yi)石(shi)材商(shang)(shang)場(chang)的潛力(li)(li)極端(duan)無窮,石(shi)材裝飾(shi)已變成(cheng)鄉(xiang)村(cun)家庭裝飾(shi)搶(qiang)手(shou)。據悉(xi),我國小城市(shi)民宅的裝飾(shi)有一(yi)半以(yi)(yi)上選用(yong)(yong)天然(ran)石(shi)材裝飾(shi)。但就國內(nei)形勢來看(kan),在出產(chan)(chan)技(ji)術(shu)落后的情況下,公司(si)(si)只能(neng)采用(yong)(yong)大(da)量(liang)的賤賣(mai)勞動力(li)(li)來填補技(ji)能(neng)縫(feng)隙。這不(bu)只使公司(si)(si)效益縮水,還直接引發(fa)了產(chan)(chan)品質量(liang)、產(chan)(chan)品維護(hu)養(yang)護(hu)等一(yi)系(xi)列問(wen)題(ti)。致使了工作展(zhan)開(kai)的瓶頸,給工作、公司(si)(si)的展(zhan)開(kai)帶來了風(feng)險。面對其(qi)時的各種情況,石(shi)材公司(si)(si)如(ru)能(neng)努力(li)(li)前進(jin)(jin)出產(chan)(chan)技(ji)術(shu),加(jia)(jia)強對新(xin)產(chan)(chan)品、新(xin)技(ji)術(shu)品的開(kai)發(fa)運用(yong)(yong),以(yi)(yi)立(li)異為方向,重(zhong)慶石(shi)材加(jia)(jia)工活潑引導花費(fei),悉(xi)數(shu)拓展(zhan)開(kai)發(fa)新(xin)產(chan)(chan)品,將(jiang)新(xin)技(ji)能(neng)、新(xin)技(ji)術(shu)運用(yong)(yong)到(dao)多個(ge)商(shang)(shang)場(chang)領域,前進(jin)(jin)產(chan)(chan)品附加(jia)(jia)值(zhi),無疑(yi)將(jiang)會贏得廣(guang)大(da)的展(zhan)開(kai)商(shang)(shang)機。

通常(chang)情況下圓(yuan)形的(de)(de)刀具(ju)因為切開(kai)半徑(jing)比照小,所以(yi)重慶(qing)石(shi)(shi)(shi)材加工廠的(de)(de)石(shi)(shi)(shi)材在受力的(de)(de)進程中比照安穩,一同(tong)切開(kai)進程的(de)(de)好(hao)壞直接決(jue)議著石(shi)(shi)(shi)材的(de)(de)運(yun)(yun)用(yong)壽數。因此加工東西(xi)的(de)(de)翻開(kai)將會不(bu)斷跋涉(she)。同(tong)樣是修建板石(shi)(shi)(shi)類,瓦(wa)板巖(yan)(yan)能(neng)夠做飾面板巖(yan)(yan),而飾面板巖(yan)(yan)不(bu)能(neng)做瓦(wa)板巖(yan)(yan),這(zhe)是啥(sha)理(li)由(you)呢?首要要知道優質的(de)(de)板石(shi)(shi)(shi)有(you)必要具(ju)有(you)的(de)(de)特(te)征:劈(pi)分(fen)功(gong)用(yong)好(hao)、平(ping)整(zheng)(zheng)度(du)好(hao)、色差小、黑(hei)度(du)高(其(qi)他色彩(cai)同(tong)理(li))、曲折強度(du)高、含(han)鈣(gai)鐵硫量(liang)低,燒失量(liang)低,耐酸堿功(gong)用(yong)好(hao),吸水(shui)率低,耐候性好(hao)。重慶(qing)石(shi)(shi)(shi)材加工廠的(de)(de)青石(shi)(shi)(shi)板材不(bu)具(ju)有(you)超(chao)卓的(de)(de)劈(pi)分(fen)功(gong)用(yong),根柢(di)沒有(you)方法把石(shi)(shi)(shi)板瓦(wa)劈(pi)分(fen)到(dao)5~7mm的(de)(de)規范(fan)厚度(du);沒有(you)超(chao)卓的(de)(de)曲折強度(du),在這(zhe)一厚度(du)下就無法抵達蓋瓦(wa)的(de)(de)運(yun)(yun)用(yong)需(xu)要;平(ping)整(zheng)(zheng)度(du)差,根柢(di)不(bu)能(neng)滿意規整(zheng)(zheng)穩妥的(de)(de)掛瓦(wa)施工需(xu)要;沒有(you)超(chao)卓的(de)(de)材料特(te)征,就不(bu)能(neng)夠經久不(bu)褪色、不(bu)風化、不(bu)生銹而堅(jian)持100年(nian)以(yi)上的(de)(de)運(yun)(yun)用(yong)壽數。

在兩(liang)個相互垂(chui)直在內的(de)(de)(de)方向鋪兩(liang)條(tiao)(tiao)(tiao)干砂道路,讓他(ta)的(de)(de)(de)寬度(du)(du)要大于板(ban)(ban)寬的(de)(de)(de)寬度(du)(du),厚(hou)度(du)(du)要大于3cm。結合施工大樣圖及景(jing)觀鋪裝分區實際尺(chi)寸,把鋪裝板(ban)(ban)塊(kuai)排(pai)好,重(zhong)(zhong)慶青(qing)(qing)石(shi)板(ban)(ban)材(cai)以便檢查板(ban)(ban)塊(kuai)之間的(de)(de)(de)縫隙,核(he)對板(ban)(ban)塊(kuai)與(yu)墻面、柱、洞口、樹池(chi)、側(ce)緣石(shi)、平緣石(shi)邊等(deng)部(bu)位的(de)(de)(de)相對位置。裝飾(shi)(shi)(shi)石(shi)材(cai)具(ju)備(bei)(bei)的(de)(de)(de)基本(ben)條(tiao)(tiao)(tiao)件具(ju)備(bei)(bei)裝飾(shi)(shi)(shi)石(shi)材(cai)必(bi)須符合3條(tiao)(tiao)(tiao)基本(ben)條(tiao)(tiao)(tiao)件。①有外在美(mei)學裝飾(shi)(shi)(shi)性(xing)。這是(shi)從視覺(jue)和人的(de)(de)(de)欣賞、歷(li)史文化角度(du)(du)認識的(de)(de)(de),重(zhong)(zhong)慶青(qing)(qing)石(shi)板(ban)(ban)材(cai)各(ge)個民族、地(di)域、習慣、喜(xi)好不(bu)同,使用(yong)的(de)(de)(de)裝飾(shi)(shi)(shi)石(shi)材(cai)色彩、種類(lei)也(ye)不(bu)同,重(zhong)(zhong)慶青(qing)(qing)石(shi)板(ban)(ban)材(cai)但不(bu)管(guan)怎樣只(zhi)要是(shi)作為裝飾(shi)(shi)(shi)裝修使用(yong)就(jiu)必(bi)須要考慮(lv)石(shi)材(cai)的(de)(de)(de)外在美(mei)觀。這是(shi)設計、選擇裝飾(shi)(shi)(shi)石(shi)材(cai)的(de)(de)(de)首要因素(su)。

襄陽偉奇雕刻白(A級)石材服務商按裝(zhuang)飾效(xiao)果(guo)分(fen)按照(zhao)(zhao)裝(zhuang)飾效(xiao)果(guo),石材(cai)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)設(she)(she)(she)計(ji)(ji)(ji),可(ke)大(da)(da)(da)致分(fen)為兩類:拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)類指模仿花(hua)(hua)(hua)朵(duo)、復(fu)雜(za)的(de)(de)(de)幾(ji)(ji)何圖(tu)形(xing)(xing)、logo、人物形(xing)(xing)象(xiang)、藝術品等類型(xing)的(de)(de)(de)設(she)(she)(she)計(ji)(ji)(ji)。特點是設(she)(she)(she)計(ji)(ji)(ji)復(fu)雜(za),線條多樣,結(jie)構(gou)精巧。裝(zhuang)飾效(xiao)果(guo)精致、華麗。但對(dui)(dui)石材(cai)護(hu)理(li)工(gong)(gong)程(cheng)(cheng)而言,拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)類的(de)(de)(de)處(chu)理(li)難度(du),也是相對(dui)(dui)較高的(de)(de)(de)。拼(pin)(pin)(pin)(pin)(pin)圖(tu)類設(she)(she)(she)計(ji)(ji)(ji)成(cheng)固定(ding)的(de)(de)(de)幾(ji)(ji)何圖(tu)形(xing)(xing)的(de)(de)(de)一(yi)類石材(cai)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)設(she)(she)(she)計(ji)(ji)(ji)。如果(guo)說(shuo)和上(shang)面的(de)(de)(de)有什么不(bu)同,那就是拼(pin)(pin)(pin)(pin)(pin)圖(tu)設(she)(she)(she)計(ji)(ji)(ji)的(de)(de)(de)結(jie)構(gou)和圖(tu)案更(geng)簡單一(yi)些(xie)。按大(da)(da)(da)小來分(fen)超大(da)(da)(da)型(xing)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)有些(xie)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)設(she)(she)(she)計(ji)(ji)(ji)會(hui)達到幾(ji)(ji)百乃至幾(ji)(ji)千(qian)平米(mi)。這種超大(da)(da)(da)型(xing)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua),是在(zai)(zai)設(she)(she)(she)計(ji)(ji)(ji)時(shi)按照(zhao)(zhao)圖(tu)案等比例放大(da)(da)(da),經加(jia)工(gong)(gong)和鋪裝(zhuang)而成(cheng)。大(da)(da)(da)型(xing)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)一(yi)般直(zhi)徑超過1.5米(mi)的(de)(de)(de)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua),工(gong)(gong)廠(chang)生產(chan)時(shi),會(hui)將設(she)(she)(she)計(ji)(ji)(ji)好的(de)(de)(de)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)板(ban)材(cai),進行分(fen)塊切割,到現(xian)場后再進行組裝(zhuang)。一(yi)般拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)直(zhi)徑在(zai)(zai)1.5米(mi)以(yi)下(xia)的(de)(de)(de)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua),工(gong)(gong)廠(chang)在(zai)(zai)生產(chan)時(shi),一(yi)般都(dou)經過了整體(ti)補膠處(chu)理(li)。上(shang)述分(fen)類,更(geng)多是從石材(cai)護(hu)理(li)的(de)(de)(de)角度(du)出(chu)發的(de)(de)(de)。因為石材(cai)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)工(gong)(gong)程(cheng)(cheng),與一(yi)般工(gong)(gong)程(cheng)(cheng),是有很大(da)(da)(da)區別(bie)的(de)(de)(de)。如在(zai)(zai)無縫(feng)化(hua)處(chu)理(li)環節,石材(cai)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)的(de)(de)(de)補膠處(chu)理(li),和一(yi)般工(gong)(gong)程(cheng)(cheng)在(zai)(zai)操作工(gong)(gong)藝和注(zhu)意(yi)事項上(shang)有著本質區別(bie)。石材(cai)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)的(de)(de)(de)補膠石材(cai)拼(pin)(pin)(pin)(pin)(pin)花(hua)(hua)(hua)的(de)(de)(de)處(chu)理(li)工(gong)(gong)藝,跟(gen)普通(tong)石材(cai)護(hu)理(li)工(gong)(gong)程(cheng)(cheng)相比,主(zhu)要區別(bie)是在(zai)(zai)無縫(feng)化(hua)處(chu)理(li),也即補膠環節。其(qi)他的(de)(de)(de)環節差別(bie)倒(dao)不(bu)是很大(da)(da)(da)。