常見例句Polysilicon is refined by means of physicochemical methods and then produced By chlorination of industrial silica powder in a partlcular situatlon . 多晶硅是由工業(yè)硅粉氯化，采用物理、化學(xué)方法提煉和特定條件下還原生產(chǎn)的。 返回 situatlon