pilot hole 引导孔 ; [油气] 导向孔
Blind pilot hole 盲导孔
pilot oil bore hole 先导油腔孔
pilot hole PP2 预先导孔
pilot hole drilling 导向孔施工
parallel pilot hole 平行导坑
pilot hole diameter [矿业] 超前孔直径
pilot hole deflection 导孔偏斜
hole pilot
洞的飞行员
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The drill would use that hole as a pilot and widen the diameter to about 28 inches, which officials have said is wide enough for the miners to be hoisted through.
CNN: Drilling to reach Chile miners yet to begin
After the word leaked, "we started to celebrate somewhat, " enjoying good times at a local test pilot watering hole.
CNN: Where planes go to die
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