P - methoxybenzeneacetonitrile was prepared in 34.8 % yield starting from anisole, via chloromethylation, cyanogenation and fractional distillation.以苯甲醚为原料,经过氯甲基化, 氰化反应后, 通过精馏获得对甲氧基苯乙腈,总收率为34.8%....
Three large globes stand on the floor.3个巨大的地球仪立在地板上。Light bar with glass globes. Number of globes can be specified.带多个玻璃球形灯的灯柱. 可指定灯的数目.The total amount of pollen was measured more accurately by 30 millimetre deameter gl...
Their German peers had a more developed sense of citizenship.和他们同龄的德国人有着更强烈的公民归属感。His engaging personality made him popular with his peers.他迷人的个性使他深受同龄人的喜爱。...children who are much cleverer than their peers...比同龄人聪明许多的孩子...
Many of the machines are gathering dust in basements.许多机器尘封在地下室里。Citizens of East Beirut went to ground in basements and shelters.东贝鲁特的市民们躲进了地下室和掩体中。Museum basements are stacked full of objects which never see the light ...
They erected a television antenna on the roof.他们在屋顶上架起了电视天线.In our village, there is an antenna on every roof for receiving TV signals.在我们村里, 每家房顶上都有天线接收电视信号.Extended the radio antenna.把收音机的天线拉到最长。...