英语词汇“piston core sampler”的意思、释义、用法解释及翻译-春雷网

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词汇	piston core sampler
释义	Definition of piston core sampler in English: piston core sampler noun An underwater core sampler consisting of a long weighted cylinder containing at its lower end a piston attached to the lowering cable, devised so that when the cylinder enters the bottom sediments under its own weight the descent of the piston is arrested, and the resulting partial vacuum inside the cylinder causes the pressure of the water to force it further into the sediment. Origin 1940s. Definition of piston core sampler in US English: piston core sampler noun An underwater core sampler consisting of a long weighted cylinder containing at its lower end a piston attached to the lowering cable, devised so that when the cylinder enters the bottom sediments under its own weight the descent of the piston is arrested, and the resulting partial vacuum inside the cylinder causes the pressure of the water to force it further into the sediment. Origin 1940s.
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