无水的

A well devoid of water is useless.

井没有用途。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在硫酸铜催化下,利用微波辐射技术快速合氯乙酸十六酯方法及影响反应收率因素。

Energy-saving ethanol dehydration techniques to produce dehydrated alcohol mainly included four measures as azeotropy distillation, extraction distillation, absorptive process and membrane separation.

摘要节能型乙醇脱制备乙醇方法主要有4种：共沸精馏法、萃取精馏法、吸附法和膜分离法。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在乙酸锌与1,5-萘二胺形配位络合物过程中，乙酸锌结构从双齿型转齿型。