For multi - object contact problem in rolling engineering, the accuracy of disaggregation mathematical method is low.在多物体同时接触轧制工程问题中,对各物体抽象出来研究存在简化较多 、 计算精度低等缺点....
Students often travel hundreds of miles to get here.学生常常赶数百英里的路来到这里。The drop in travel is bad news for the airline industry.旅游热降温对航空业来说是个坏消息。Mr Abel's doctor has said he is unfit to travel.埃布尔先生的医生说他不宜出行。...