英语词汇“顶板内不可采煤层”的读音、翻译、释义、用法及例句-啃外文网

词汇	顶板内不可采煤层
释义	顶板内不可采煤层顶板内不可采煤层[dǐng bǎn nèi bù kě cǎi méi céng]1.■buzzara
随便看	light petroleum light petroleum spirit light photon light pickle salting light piece light pillar lightpipe light-pipe optics lightplane light plate light plot lightplot light point indicator light polarization demodulator light portable conveyer light-positive light power motor light-projector light projector lightproof light pulse light pulse bonding light pulse propagation light pump light pumping

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