名词
中文翻译：多底向孔
同义词：
['multi-bottom hole', 'multi-bottom slot', 'multi-bottom aperture']
例句：
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1. The drillhas a multi-bottom directional hole that allows it to penetrate through different materials.
这个钻头有一个多底向孔，可以穿透不同的材料。
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2. The construction of the tunnel required the installation of multiple multi-bottom directional holes for support.
隧道的建设需要安装多个多底向孔以支撑。
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3.The design of the drilling rig included a multi-bottom directional hole to optimize its performance.
钻井平台的设计方案包括一个多底向孔，以优化其性能。