Tap water is never chemically pure. 自来水从来不是化学上的纯水。
All chemically pure art has this power to act upon us quickly and intensely. 一切有化学纯度的艺术都具备这种迅速而强烈地影响我们的力量。
" We take Aloe vera leaves and put them through a series of complex extraction steps to produce a chemically pure powder, and then we combine the flu vaccine with it," he explains. 我们采用芦荟叶,通过一系列复杂的提取步序得到一种化学纯粉末,然后将流感病毒疫苗与之混合。
The results show seawater extracting potassium sulfite cooking rice straw and chemically pure potassium sulfite cooking rice straw have similar results. 用海水制取的亚硫酸钾用于稻草蒸煮,其结果与化学纯亚硫酸钾的蒸煮结果相似。
The chemically pure stronium carbonate could be prepared directly from the industrial grade stronium solution by using a new type of calcium removing reagent. 使用工业上新型的除钙剂,由工业级原锶液,可直接制得化学纯碳酸锶。