基本解释状况同根派生 situatlon相关词英汉例句Polysilicon is refined by means of physicochemical methods and then produced By chlorination of industrial silica powder in a partlcular situatlon . 多晶硅是由工业硅粉氯化，采用物理、化学方法提炼和特定条件下还原生产的。situatlon更多例句