“dragline scraper”的概念、定义、翻译、参考文献-科学参考

单词	dragline scraper
释义	dragline scraper [`drag´līn `skrāp·ǝr] ^{MECHANICAL ENGINEERING} A machine with a flat, plowlike blade or partially open bucket pulled on rope for withdrawing piled material, such as stone or coal, from a stockyard to the loading platform; the empty bucket is subsequently returned to the pile of material by means of a return rope.
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