74. Vim li cas cov khoom zoo ntawm qhuav - txheej txheem kub - dip galvanizing zoo dua li cov txheej txheem ntub dej -?
73. Vim li cas thiaj muaj cov dej xau ntau ntxiv rau sab hauv thiab sab nrauv ntawm galvanized steel kav?
72. Vim li cas txhuas txwv tsis pub nyob rau hauv zinc da dej kub -dip galvanizing?
71. Yog vim li cas tsis nco qab txheej txheej thiab zinc hais feem ntau tshwm sim thaum lub sij hawm txhuas-zinc alloy potting ntawm steel kav, tshwj xeeb tshaj yog thaum pib? Cov
70. Dab tsi yuav siv tau los txo qhov tsim ntawm zinc tshauv?
69. Dab tsi yog qhov cuam tshuam rau kev loj hlob ntawm zinc tshauv?
68. Qhov zoo ntawm zinc- aluminium alloy cuam tshuam li cas ntawm galvanized txheej?
67. Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm kev ntxiv txhuas rau zinc kua?
66. Vim li cas cov kav hlau yuav tsum tau qaij ntawm lub kaum sab xis thaum dipped rau hauv zinc molten rau plating?
65. Nyob rau hauv dab tsi yog zinc slag tsim? Nws cov khoom thiab cov khoom yog dab tsi?
64. Zinc tshauv tsim li cas? Nws cov khoom yog dab tsi?
63. Cov ntsiab lus nickel hauv cov kav hlau thiab cov lauj kaub galvanized substrates cuam tshuam li cas rau kub-dip galvanizing?