Non - basic nitrogen - containing series include pyrroles, indoles, carbazoles and benzcarbazoles.不含碱性氮的化合物包括吡咯 、 吲哚 、 咔唑和苯咔唑.Nitrogen trifluoride ( NF 3 ) is a toxic, colorless, odorless, nonflammable, oxidizing compres...
The atmosphere consist of more than 70 % of nitrogen.大气中含有70%以上的氮气.Every tonne of coal contains, on average, 30 kilograms of nitrogen.每吨煤平均含30公斤氮.The plant requires nitrogen in order to make proteins.植物需要氮以便制造蛋白质....
最后, 让我们再看一遍上周游泳视频中的示范者.Finally, let's take another at our swimmer from last week's drill.较多的示范者正在到达持续在州主管当局上的压力取消计画.More demonstrators were arriving to keep up the pressure on state authorities to cancel the pr...
Engaged in the research project of'studies on the lanthanon stabilizer ".参与横向研究课题 “ 稀土稳定剂的开发 ”.The Lanthanon and its compounds, because of its 4 f electronic characters, have special performance.稀土元素由于具有4f电子特性, 使其元素...
Erica was solemn, pulling at her blonde curls.埃丽卡表情严肃，扯着自己卷曲的金发。"I was very unsure of myself after the divorce," she says, unconsciously sweeping back the curls from her forehead.“离婚之后我变得非常不自信，”她边说边不自主地把额前的卷发往后捋了捋。...the...
Its atmosphere is one of repose rather than excitement.那里气氛安宁而不热闹。She felt a strange excitement taking hold of her.她浑身感到一股莫名的兴奋。She felt a surge of excitement run through her.她突然觉得浑身激动。...
他把球打至投手右侧外场员的附近.He played the ball to mid - on.一名外场员得到了球: 他能把他淘汰出局 吗 ?A fielder has the ball; can he throw him out?他在投手左侧的外场员位置上被杀出局.He holed out at mid - off....