Halogen atoms contain seven electrons in their valence shell.卤原子在它们的介电子层含有七个电子.Hydrogen is a one - valence element.氢是一价的元素.Evaluate the evenhanded affirms valence can reflect investment both sides more, justice.评估确认价更能体现...
Hydrogen is a one - valence element.氢是一价的元素.Valence is a sleepy little town just south of Lyon.瓦朗斯是里昂南面一座寂静的小镇。Every element tends to satisfy both its primary and secondary valence.每一元素倾向于既满足它的主价又要满足它的副价....
Remove the bung and airlock and add are using to stop fermentation and to encourage settling.去除桶盖和气密室并且增加停止发酵的物质来加快定性.Pour a whole lot of cold water over the rice, and bung it in the oven.往米中倒入大量凉水，然后放在炉子上。Many firms wen...
他在擅离部队之前是一名陆军少尉。He was a second-lieutenant in the army until he deserted.他因擅离职守受到了军法审判。He was court-martialled for desertion.部长警告说，任何擅离职守的公务员都会被立即停职。The minister warned that any civil servant not at his desk faced immedi...
Fewer workers are needed to solder circuit boards.焊接电路板需要的工人更少了。Joints between reinforcement members can be made satisfactorily with tin solder.锡焊能够满意地做成加筋构件之间的接头.A number of metals and alloys, how ever , are difficult t...
他的祖父和外公都热衷于演说。Both his grandfathers were fired with an enthusiasm for public speaking.亚当经常呆在他祖父的办公室里。Adam spent a lot of time in his grandfather's office.我的祖父是苏格兰矿工工会干事。My grandfather was secretary of the Scottish M...