化合物庚烷的主要用途是作为双基推进剂的增塑剂.The heptane compound has a primary purpose as a plasticizer for doublebase propellant systems.正庚烷异构化的难点在于高选择性地生成多侧链异庚烷和抑制异庚烷的裂化反应.However, it is difficult to produce multi branched i heptane and re...
然而,晶体的规则性不止于此.The regularity of the crystal goes beyond this, however.此类晶体的基本形状为一菱面体.The basic form of this crystal is a rhomb.这称之为短程序, 以区别于固态晶体的长程序.This is called short - range order, in contrast with the long - range o...
He was accused of having collaborated with the secret police.他被控与秘密警察勾结。We have collaborated on many projects over the years.这些年来我们合作搞了许多项目。We have collaborated closely with the university on this project.我们与大学在这个专案上紧密合作...
严肃、严谨、倔强的他同时又冷漠、多疑、敏感、不会变通。Formal, exact and obstinate, he was also cold, suspicious, touchy and tactless.我叔叔是位严格而又倔强的军医,他曾身经两次大战.My uncle was a hard - nosed army officer who had seen service in two wars.驴被认为是最倔强的牲畜。Donk...
"Orchards would take the place of the jungle," he rhapsodized.“要让这片丛林成为果园，”他无比兴奋地说。Small English orchards can hardly compete economically with larger French ones.英国的小型果园很难在经济上和法国的大型果园竞争。They turned the hills into orchard...