“hydraulic swivel head”的概念、定义、翻译、参考文献-科学参考

单词	hydraulic swivel head
释义	hydraulic swivel head [hi`drȯ·lik `swiv·ǝl ´hed] ^{MECHANICAL ENGINEERING} In a drill machine, a swivel head equipped with hydraulically actuated cylinders and pistons to exert pressure on and move the drill rod string longitudinally.
随便看	dephlegmator dephosphorize depilation depilatory depleted material depleted uranium depletion depletion drive depletion layer depletion-layer capacitance depletion-layer rectification depletion-layer transistor depletion mode depletion-mode HEMT depletion region depletion-type reservoir depocenter depolarization depolarization factor depolarizer depolymerization deposit deposit attack deposit dose deposited carbon resistor

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