Are urethritis of blame gonococcus sex and AIDS relative?非淋菌性尿道炎与艾滋病有关系 吗 ?Gonorrhea is an infectious sexually transmitted disease - caused by the gonococcus bacterium, Neisseria gonorrhoeae.淋病是一种传染性性病 - 淋球菌引起的细菌, 淋球菌....
异氰酸酯可由含氯的环(或非环)状分子氟化而得.The isocyanates can be obtained by the fluorination of nitrogenous cylic or acyclic molecules.含氯量和孔隙度之间的关系图式也许近似于一条双曲线.The relation between the chlorinity and porosity may be approximated by a hype...
Aim To synthesize new type of octane number improver for gasoline, methoxyisobutyrate.目的合成一种新型汽油辛烷值改进剂─甲氧基异丁酸烷基酯.Cetane improver . Makes the engine run better at higher compression settings.碳氢化合物的改进物. 使引擎在高压缩比时运转较为顺畅.Cyc...
滚烫的液体泼在水泥地面上又溅了起来。The hot liquid splashed down on the concrete and rebounded.在粗糙不平的水泥窗台上有一条细细的发光水印。A thin, glistening thread of moisture ran along the rough concrete sill.一只小狗踩在刚抹好的水泥面上。A puppy stepped in the fresh cemen...