名词
中文翻译：测深仪
同义词：
['depth gauge', 'hydrometer']
例句：
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1.The engineer used a dial depth gauge to measure the water level in the well.
工程师使用测深仪测量井中的水位。
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2.The depth gauge was used to determine the maximum safe depth of the ship.
深度计被用来确定船只的最大安全深度。
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3. The hydrometer was used to check the oil content in the fuel tank.
油量计被用来检查燃料箱中的油含量。