常见例句雙語例句Using BaCl2·2H2O and urea as raw material, adding control agent, different topography barium carbonate particles were synthesized by homogeneous precipitation method.以二水氯化鋇與尿素爲原料採用均相沉澱法，通過添加控制劑郃成不同形貌的碳酸鋇粒子。 返回 BaCl2