A method of producing crystal sodium fluoride with sodium fluosilicate and sodium carbonate is introduced.本文介绍了以氟硅酸钠、纯碱为原料生产晶体氟化钠的工艺,并对操作条件作了详细的说明.Compositions, crystallization mechanisms and properties of the fluosilica...
It was imperative that he act as naturally as possible.最重要的是他要做到尽可能自然。Stress may act as a trigger for these illnesses.压力可能会成为引发这些疾病的原因。Women should be free to dress and act as they please.女性应该有穿衣和行动的自由。...
Blue and green eyeshadow has long been considered kitsch.蓝色和绿色的眼影一直被认为是俗气的。Collectors of Fifties kitsch should pop over to Brussels for the flea market.50年代庸俗艺术作品的收藏者应该到布鲁塞尔的跳蚤市场去看看。This kitsch sells like mad in the big ...