Soil transformation, deep plough and trenching to de water should be done besides routine management before planting Phyllostachys propinqua McClure in farmland.
农田栽种早园竹，除了要全面做好竹园常规管理外，还应做好土壤改造、深翻、开沟排水等工作。
In pipeline construction, traditional explosive trenching method has been applied in stonework section. Caterpillar rock trencher will play an important role in practical pipeline laying process.
在管道施工建设中，对石方段的管沟开挖一直采用传统的爆破成沟的施工方法，而履带式岩石开沟机在管道敷设的实际应用中可以发挥重要作用。
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