英语词汇“helical steel support”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	helical steel support
释义	helical steel support helical steel support [′hel·ə·kəl ′stēl sə¦pȯrt] (mining engineering) A continuous, screw-shaped steel joist lining used for staple shafts.
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