| 单词 | pycnohydrometer |
| 释义 | > as lemmaspycnohydrometer ΚΠ 1876 Sci. Amer. 27 May 340/1 A Picno-Hydrometer... A new scientific instrument..is for determining the specific gravity of fluids as well as solids. Its construction is based on the combined principles of the picnometer or specific gravity glass and the hydrometer. < as lemmas |
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