earthwork digging
英
美
- 土方开挖
双语例句
- In an earthwork,the conveyance is like a consumer due to waiting for necessary loading capacity,and then an excavator is the same as a service system.
在土方开挖工程中，汽车要等待挖土机挖土，汽车就是顾客，挖土机就是服务机构，二者形成一个排队系统。
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