His classmates were labouring with elementary algebra.他的同学们正在绞尽脑汁地演算初等代数题.He served as an elementary-school custodian for 20 years.他当小学管理员20年了。an elementary English course基础英语课程Using Greek sources, he compiled in Latin s...
他用餐巾快速擦去领带上的污点.He dabbed at the spot on his tie with a napkin.你能把这件外套上的污点洗掉 吗 ?Can you clean the coat of these dirty marks?他的那种愚蠢行为将永远是他名誉上的污点.That foolish deed of his will remain a blot on his escutcheon....
如果冲量为零, 则动量不变.If the impulse is zero, there is no change in momentum.正周相动力冲量的定义可以用类似的式子表示.The positive phase dynamic impulse can be defined by a similar expression.用于碰撞过程的动量定理——冲量定理.The momentum theorem applied to an imp...
Objective To observe the curative effects of ivermectin combined with albendazole against hookworm and whipworm.目的观察伊维菌素和阿苯达唑伍用驱治钩虫和鞭虫感染的疗效.In the past century, eradication efforts failed against hookworm , yellow fever ...