望远镜的物镜必须精确置于中心上.The object glass of a telescope must be accurately centred.此物镜仅产生很小的散射光.This objective produces only very little scattered light.由单透镜组成的物镜可作目视和照相观测用.Objectives which consist only of one lens can be used f...
The new technology for the preparation of cryolite from fluosilicic acid and ammonium hydrocarbonate is introduced.介绍了氟硅酸、碳酸氢铵制备冰晶石的新工艺.Bites suction cup the toxin and apply 3 % ammonia solution or 5 % sodium hydrocarbon...
You get 2,000 people jostling each other and bumping into furniture.2,000个人互相推推搡搡，撞在家具上。There was so much furniture you could hardly move without bumping into something.家具太多，稍挪步就会撞到什么东西上。If her heart would only stop bump...
某些作者曾经说过,同源部分有互相合生的倾向.Homologous parts, as has been remarked by some authors, tend to cohere.合在一起的多个心皮称合生心皮.The gynoecium is denoted by the letter G in the FLORAL FORMULA....