“stretcher bar”的概念、定义、翻译、参考文献-科学参考

单词	stretcher bar
释义	stretcher bar [`strech·ǝr ´bär] ^{MINING ENGINEERING} A single screw column, capable of holding one machine drill; used in small drifts.
随便看	sulfur trioxide sulfuryl sulfuryl chloride sulfuryl fluoride Sulidae sullage Sullivan angle compressor Sullivan reaction sulpho- sultriness sulvanite Sulzer two-cycle engine sum sumac wax sumatra sumbul oil sumi ink sumi reed summability method summable function summary plotter summary punching summary recorder summation check summation convention

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