“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	conehead rivet cone-in-cone structure cone karst cone key cone loudspeaker Conelrad cone mandrel Conemaughian cone nozzle cone of ambiguity cone of dejection cone of depression cone of detritus cone of dispersion cone of escape cone of friction cone of influence cone of nulls cone of revolution cone of silence cone-of-silence marker cone of visibility cone pulley cone rock bit cone-roof tank

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