Nto tiav | Cov yam ntxwv thiab kev siv |
2B | Qhov ci ntsa iab thiab flatness ntawm no2B zoo dua NO.2D. tom qab ntawd los ntawm kev kho mob tshwj xeeb los txhim kho nws cov khoom siv kho tshuab, No2B tuaj yeem yuav luag txaus siab rau kev siv dav. |
NO.1 | Qhov saum npoo yog tiav los ntawm kev kho cua sov thiab pickling lossis cov txheej txheem sib txuas nrog rau tom qab kub dov. |
NO.4 | Polished nrog abrasive siv ntawm grit #150-#180, muaj brightness zoo dua nrog discontinuous coarse stria, tab sis nyias dua No3 yog siv los ua da dej vaj tse sab hauv thiab sab nrauv ornaments hluav taws xob cov khoom siv hauv chav ua noj thiab khoom noj khoom haus thiab lwm yam. |
HL | Polished nrog abrasive siv ntawm grit #150-#320 ntawm NO.4 tiav thiab muaj cov streaks tas mus li, feem ntau yog siv los ua vaj tse ornaments of elevator, qhov rooj ntawm lub tsev, frontal phaj thiab lwm yam. |
BA | Txias dov, ci annealed thiab daim tawv nqaij-dhau, cov khoom muaj brightness zoo heev thiab zoo relativity zoo li daim iav, chav ua noj apparatus, ornament thiab lwm yam. |
8K | Cov khoom lag luam muaj qhov ci ci zoo heev thiab xav rov ua kom yooj yim tuaj yeem ua daim iav. |
