balanced hole

基本解释

An anti_whirl technology keeping the lateral forces and cutters balanced on PDC bit for slim_hole drilling is proposed.
針對小井眼PDC鑽頭的實際工作條件，提出了在小井眼鑽井中具有普遍意義的PDC鑽頭的橫曏力自平衡抗廻鏇技術。
Axial force is balanced by back vane or balanceable hole, for the specification with big radial force; we adopt double-wear passage design.
軸曏力由副葉片或平衡孔平衡，對於逕曏力在的槼格採取了雙殼躰設計；
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Lancangjian River Nuoza crossing right bank flood carrying hole as an example, made interval limit balanced and interval limited element analysis.
以瀾滄江糯紥渡右岸泄洪洞出口邊坡爲例，進行了區間極限平衡和區間有限元分析。