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复合驱动钻井
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复合驱动钻井
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工学
钻井方法
释
compound drive drilling
复合驱动钻井
钻头的驱动由地面驱动(转盘驱动或顶部驱动)和地下驱动(一般为井下螺杆钻具或涡轮钻具)两部分组成,钻头的转速是两部分驱动转速合成的钻井方法。
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solar ultra-violet radiation
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Solar Ultraviolet Telescope
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Solar wind Magnetosphere Ionosphere Link Explorer
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solar X-ray imaging telescope
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solar γ-ray emission
solar γ-ray radiation
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