“specific-gravity hydrometer”的概念、定义、翻译、参考文献-科学参考

单词	specific-gravity hydrometer
释义	specific-gravity hydrometer [spǝ`sif·ik ¦grav·ǝd·ē hī`dräm·ǝd·ǝr] ^ENGINEERING A hydrometer which indicates the specific gravity of a liquid, with reference to water at a particular temperature.
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