最普通的精加工工序是用机械的方法, 如研磨, 磨削或用磨料抛光.The most common finishing operations are mechanical, such as milling, grinding, or polishing with abrasives.实验中采用磨料磨损的方式.Abrasion wearis taken as the main wear mode in the experiments.磨料水射...
They're going house to house, rounding up the residents.他们正挨家挨户将居民集中到一起。He had sought work as a cowboy, rounding up cattle.他找了一份放牛的差事，负责把牛赶到一起。Your dad and Admiral Spruance are rounding the Smiths'terrace.你爹跟期普...
The changes will lead to more flexible leases, and leases nearer to 15 years than the present norm of 25 years.这些变化将带来更灵活的、接近15年的租期，而不是现行的常规为25年的租期。News of the leases leaked out at once.租让的消息立即泄露.Gambell involved a grant...