Cov kev cai ntawm kev txheej:
1. Ua kom lub khob ci ntsa iab txhim kho qhov ntsuas refractive, tiv taus ntsev tsuag, tiv taus kua qaub, tiv taus alkali, tiv taus dej thiab lwm yam khoom.
2. Txuag cov txheej txheem pleev xim ib txwm muaj, txuag nqi, kev tiv thaiv ib puag ncig thiab tiv thaiv kev ua qias tuaj thib ob.
Cov Ntsiab Lus Tseem Ceeb ntawm Zhenhua Program:
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Muab cov khoom siv txheej thiab kev txhawb nqa kev siv tshuab txheej rau cov chaw tsim khoom lag luam thiab cov neeg siv khoom.
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Muab cov kev daws teeb meem zoo, zoo, thiab pheej yig rau kev tsim kho tshiab tas mus li thiab kev loj hlob ntawm kev lag luam.
