“foreshaft sinking”的概念、定义、翻译、参考文献-科学参考

单词	foreshaft sinking
释义	foreshaft sinking [`fȯr´shaft ´siŋk·iŋ] ^{MINING ENGINEERING} The first 150 feet (46 meters) of shaft sinking from the surface; the plant and services for the main shaft are installed during this step.
随便看	tape-relay station tape reperforator taper-in-thickness ratio taper key taper pin taper pipe thread taper plug gage taper reamer taper ring gage taper-rolling bearing taper shank taper tap taper washer tape search unit tape serial number tape skip tape speed tape station tape-to-card tape-to-card converter tape-to-tape conversion tape transmitter tape transport water leg waterless zone

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