“drag shovel”的概念、定义、翻译、参考文献-科学参考

单词	drag shovel
释义	drag shovel 反铲挖土机反向机械铲拖铲挖土机单斗挖掘机
随便看	coupling hysteresis effect coupling impedance coupling inductance coupling inductor coupling interval coupling iris coupling joint coupling key coupling knuckle pin coupling layer coupling lifter coupling link coupling loop coupling loss coupling machine coupling manufacturer coupling mechanism coupling meter coupling mirror coupling modulation coupling network coupling nipple coupling nut coupling of circuits coupling of definite amount of filling

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