However, momentum is always conserved in a collision, whether or not the collision is elastic.然而, 不管碰撞是不是弹性的, 在碰撞过程中动量总是守恒的.The elastic interaction between a wedge disclination dipole and an interfacial crack was investi...
积雪与窗子相平.The snow is even with the window.河水涨到跟河岸相平了.The water is coming up to the bank.河水上涨至与堤岸相平.The water rose until it was on a level with the river banks....
Thankfully the smoking of cigarettes is on the decline.令人欣慰的是，吸烟量在逐渐下降。Thankfully, it wasn't smothered in stringy cheese like some pizzas.幸好它不像有些比萨饼那样上面涂满了难嚼的奶酪。Things have thankfully worked out all right.谢天谢地，事情终于圆...
Objective To study the therapeutic effect of laparoscopy combined choledochofiberscopy on cholecystolithiasis and choledocholithiasis.目的评估腹腔镜联合胆道镜治疗胆总管结石合并胆囊结石的临床效果.Conclusion: Laparoscopy surgery for treatment extrauter...