“Petersen grab”的概念、定义、翻译、参考文献-科学参考

单词	Petersen grab
释义	Petersen grab [`pēd·ǝr·sǝn ´grab] ^ENGINEERING A bottom sampler consisting of two hinged semicylindrical buckets held apart by a cocking device which is released when the grab hits the ocean floor.
随便看	Synentognathi syneresis synergetics synergic curve synergid synergism synergist synergy synesthesia synfuel Syngamidae syngamy syngas syngeneic syngenesious syngenesis syngenetic syngenite Syngnathidae synkinematic synkinesia synodic synodic month synodic period synonym

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