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...
the enemy onslaught on our military forces敌军对我军的进攻The city resisted the enemy onslaught for two weeks.这个城市反抗敌人的猛攻达两个星期之久.The clash of our onslaught hurtled across the field.我们猛攻的声音传遍战场....
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...