Archaeologists have uncovered some ancient earthwork.考古学家发现了一些古代的土建工程.Square grid is a common method used to estimate earthwork quantity.方格网法是工程土方量计算中应用最为普遍的一种方法.Scope: Earthwork Construction Machinery Construction Earth...
我要克服所有的软弱、绝望和恐惧。I would overcome any weakness, any despair, any fear.当他的精力耗尽时，他的绝望和担心也增加了。As his energy drained away, his despair and worry grew.琼对整件事情彻底绝望了。Jean was thoroughly cheesed off by the whole affair....
He tore up the letter angrily and threw it into the wastebasket.他气愤地把信撕掉,扔进字纸篓里.While nobody was looking, she squashed her school hat and crammed it into a wastebasket.趁没人看见，她把校帽弄扁塞进了废纸篓。Thomas crumpled the empty envelop...
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...