... trenching plough 犁式挖沟机 ; 挖沟犁 drainage trenching 挖排水沟 rock trenching 挖岩石管沟 ...
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drainage by trenching 开渠引流
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Disturbance of the bedrock changes drainage and runoff patterns, which may increase the rate of erosion. Trenching is the exploration activity that most disturbs bedrock.
干扰的基岩排水和径流的变化模式，这可能增加侵蚀率。挖沟是勘探活动，大部分干扰的基石。
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