boring profile 中文意思是什麼
boring profile
解釋
鉆孔斷面圖-
Roadheader is a part profile tunnel boring machine which can excavate, convey rock blocks and walk by itself. it is very suitable to excavate soft - rock tunnel
臂式掘進機是一種集開挖、裝碴和自動行走於一體的部分斷面隧道掘進機,它非常適用於軟巖隧道的掘進。
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