胶片的曲率是和弯月透镜后面的反射镜同心的.The curvature of the film is concentric with the mirror behind the meniscus.具有大致同心的等压线的低压区在技术上称为气旋.A region of low pressure with roughly concentric isobars is known technically as a cyclone.一层层同心的虚无是...
Methods: The target compound was prepared through a four - step reaction from 4 - bromophenol .方法以 4- 溴苯酚为原料,经4步反应制得目标化合物阿达帕林.A sensitive analytical method of bromophenol - like marine flavors has been established using ...
She was intimidated by the number of businessmen buzzing around the saleroom.拍卖行里乱哄哄谈生意的商人们令她望而生畏。Businessmen are tired of politicians talking the economy down.商人厌烦政客们贬低经济的重要性.The company'sclosure has left many smal...
Forms of gastroenteritis include food poisoning, cholera, and traveler's diarrhea.胃肠炎的病因还有食物中毒 、 霍乱和旅行者腹泻.An inoculation against cholera is recommended.建议注射预防霍乱的疫苗。They feared a new cholera pandemic...他们担心新一轮的霍乱大流行。...