Thousands of meteorites penetrate Earth's atmosphere and fall harmlessly to the ground each year.每年,几千块陨石穿过地球大气,掉到地面上,并不会造成什么伤害.One theory about the existence of extraterrestrial life rests on the presence of carbon...
Small meteorites have left impact craters all over the planet's surface.这个行星的表面布满了小块陨石留下的撞击坑.One theory about the existence of extraterrestrial life rests on the presence of carbon compounds in meteorites.地球外存在生命的理论...
Accuracy of analysis results was improved by buffer solution as the acidifier.改用缓冲溶液作为酸化剂,提高了分析结果的准确性.The kelp drink was prepared by mixing the diluted hydrolysate sweetener, acidifier and stabilizer.用盐酸和柠檬酸水解海带多糖, 水解液经稀...
His mind was a haze of fear and confusion.由于害怕和困惑，他当时处于一种混沌状态。A thick haze of acrid smoke hung in the air.空气中弥漫着刺鼻的浓烟。Dan smiled at him through a haze of smoke and steaming coffee.丹透过烟雾和咖啡的热气朝他笑了笑。...
The invention relates to swing flapper used to kill mosquito and fly.本发明涉及一种用于捕杀蚊蝇的蚊甩子.And theoretical basis is presented to further apply nozzle - flapper valve to two - stage electro - hydraulic servo valve .较快的响应速度;为进...
While the water was heating she decided to shake out the carpet.趁着烧水的时候，她决定将地毯抖抖干净。I've even seen her shake Zara when she's been naughty.我甚至见过她在扎拉淘气的时候使劲摇晃她。No amount of reasoning could shake him out of his con...
Amphoteric monomer is prepared with acrylic acid , dimethylamine and chloroethanol by Mannich reaction.以丙烯酸、二甲胺、环氧氯丙烷为原料,通过曼尼希反应制得两性离子单体.Biological activities of amphoteric surfactants to higher or lower organisms were i...