“blue metal”的概念、定义、翻译、参考文献-科学参考

单词	blue metal
释义	blue metal [`blü ´med·ǝl] ^GEOLOGY The common fine-grained blue-gray mudstone which is part of many of the coal beds of England.
随便看	tapered waveguide tapered wheel 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

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