land dredger是什么意思 land dredger怎么读
land dredger的用法和样例
- As the ponds are quite small and not very deep, it has been proposed that a single grab dredger be used for the operation.
由于池塘面积较小而且水不太深，已建议在操作时使用单抓斗挖泥机。 - Where tight dredging depth tolerances are required to dredge contaminated materials the bucket-type closed-grab dredger shall incorporate a visor.
在挖掘受污染物料时，若严格规定了挖泥深度容限，则密封抓斗式的挖泥机应设置一个护罩。
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