• 基本释义

1.Application of the Technique of the Concrete Wall against Seepage with the Thin Wall Hydraulic Grab Bucket in Bintian Reservoir
薄壁抓斗法混凝土防渗墙技术在滨田水库的应用收藏指正
2.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。收藏指正
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