Acetanilide and hexane diacid, potassium hydrogen phthalate could improve PVC crystallinity.乙酰苯胺 、 己二酸和邻苯二甲酸氢钾可以使PVC结晶度增大.Diacid has been got using diethylene glycol as decomposition agent of adduct.采用二甘醇作为加合物的分解剂,得到了二元酸...
台钳上有刻痕的虎钳牙帮助它紧咬住工件.The scored jaws of a vise help it bite the work.所有的钳工工作都可使用台钳 ( 平口钳 ).The vise ( parallel - jaw vice ) is available to all of the bench work....
这家公司生产经久耐穿、外形美观且价格合理的服装。The company makes wearable, beautifully cut clothes at affordable prices.各种外形和尺寸的自行车都有。Bikes come in all shapes and sizes.这辆车外形设计流畅，看起来像赛车。It is smoothly contoured to look like a racing car....
The prison was cold and dank.监狱里又冷又湿.People who toiled in dim, dank factories were too exhausted to enjoy their family life.在昏暗潮湿的工厂辛苦劳作的人们累得无力再去享受家庭生活。a dark dank cave阴暗潮湿的洞穴The kitchen was dank and cheerless.厨房既潮湿又阴暗。S...