“contrarotating propellers”的概念、定义、翻译、参考文献-科学参考

单词	contrarotating propellers
释义	contrarotating propellers [¦kän·trǝ`rō´tād·iŋ prǝ`pel·ǝrz] ^{MECHANICAL ENGINEERING} A pair of propellers on concentric shafts, turning in opposite directions.
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