The idea that continents broke and drift apart is known as the hypothesis of continental drift.认为大陆曾经分裂并漂离的想法叫大陆漂移假说.Sedimentary facies include river bed , alluvial flat, neritic , river mouth and limnetic, littoral, wea...
A single - ring benzoxazine was synthesized by solvent - free method.用无溶剂法合成了一种单环苯并嗪.Curing shrinkage, temperature and curing enthalpy of benzoxazine based on diphenyl oxide resin were investigated.研究了苯并口恶嗪二苯醚树脂固化时的体积收缩率...
报道以呋喃甲醛和苯乙酮为原料,氢氧化钠为催化剂,采用超声波辐射合成糠叉乙酰苯的方法.With furfural and acetophenone as raw materials - furfurylideneacetophenone was synthesized by NaOH as catalyst under ultrasonic irradiation....
她想尖叫，但她的声带好像不听使唤了。She wanted to scream, but her vocal cords seemed paralysed.他把大门咣当一声带上了。He pulled the gates to with a clang.他砰的一声带上了大门。He slammed the gate shut behind him....
The diamond towns are gradually being reclaimed by the desert...这些钻石城镇正逐渐重归沙漠。This necessitates subdivision of the area to be reclaimed.这就必须划分要改良的面积.Estonia reclaimed its independence and seceded from the Soviet Union.爱沙...