| 词汇 | hydrometer |
| 释义 | hydrometer noun[ C ] chemistry specializeduk /haɪˈdrɒm.ɪ.tər/ us /haɪˈdrɑː.mə.t̬ɚ/ a piece of equipment used to measure the density (= amount of matter in a particular quantity) of liquids, especially a long glass tube, closed and with a weight at one end so that it floats vertically液体比重计，浮秤（用于测量溶液密度的仪器，尤指封闭的长试管，一端有砝码，可使液体竖直流动） Laboratory equipment aspirator bell jar bubble chamber Buchner funnel Bunsen burner calorimeter condenser flask litmus microscope particle accelerator Petri dish photometer pipette retort stand scope siphon synchrotron test tube transducer Examples of hydrometerhydrometer Mechanical analysis was used to determine percent sand, silt and clay using a soil hydrometer method17,18. The density of the brine in the reservoir was measured using a hydrometer accurate to 0.0005 g ml-1. The simplest method of measuring the specific gravity of a liquid is the hydrometer. The sand fraction (63-2000 m) was determined by wet sieving, with silt (2-63 m) and clay (<2 m) determined by hydrometer. But to compensate for long-term aquarium evaporation, it is far more convenient to use a hydrometer to characterize the specific gravity while adding pure water as needed. When the solution is cool, the gravity is read by hydrometer, and small quantities of water or concentrated potash solution are added till the required gravity is obtained. Hydrometer method used for making particle size analyses of soils. Texture was measured with the hydrometer method23. He studied new hydrometers (to measure the level of a river), rain gauges, and hydraulic operations over rivers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The electrolyte can not be tested by hydrometer to diagnose improper charging, which can reduce battery life. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although ethylene glycol hydrometers are widely available and mass-marketed for antifreeze testing, they give false readings at high temperatures because specific gravity changes with temperature. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In practice the stalk of the hydrometer is pre-marked with graduations to facilitate this measurement. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Using the hydrometer, brewers could calculate the yield from different malts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The spirit manufactured was tested with a hydrometer and measured by the "daroga" without whose knowledge no spirit could be removed from the distillery. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a non-sealed battery each of the cells can be checked with a portable or hand-held hydrometer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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