为什么香料在15世纪末期的欧洲如此贵重?Why were spices so highly valued in late 15th-century Europe?19世纪50年代末期,技术变革的速度加快了。In the late 1850s the speed of technological change quickened.这灌木是在这个季节末期才栽种的.The bush was planted late in the season...
Hence a good absorber is a good emitter, and a poor absorber is a poor emitter.所以良吸收体就是良发射体, 劣吸收体就是劣发射体.Recently, I think after some soft shock absorber, you want to adjust.最近以来, 我认为后减震器有些软, 想调整一下.Shock absorber sliding ...
Any time you want a babysitter, dear, you only have to ask.亲爱的,你什么时候需要人帮忙照看孩子,只要开口说一声就行。She couldn't always afford a babysitter.她并不是总能请得起临时保姆。I can't find a babysitter for tonight.我找不到人今天晚上帮我看小孩。...
这顺口溜可真迷人!What a captivating jingle it is!我刚刚在报纸上看到了这首顺口溜.I came across these jingling rhymes in a newspaper a little while ago.编辑歌谣 、 顺口溜 、 谜语等, 增强记忆.Third , edIt'songs, doggerel, such as the riddle, and enhance mem...
在醇溶剂中,它不能被硼氢化物还原.It is resistant to borohydride reduction in alcoholic solvents.然后氢化物在低温火焰中分解.The hydrides are then decomposed in a low - temperature flame.论述了锡氢化物的形成条件和物理化学特征.Forming conditions and physical and chemical...