| 单词 | gravity balance |
| 释义 | > as lemmasgravity balance gravity balance n. a type of torsion balance formerly used to measure the variation in the force of gravity from one place to another. ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > balances aquapoise1688 hydrostatic balance1755 gravity balance1900 1900 R. Threlfall & J. A. Pollock in Philos. Trans. (Royal Soc.) A. 193 215 (title) On a quartz thread gravity balance. 1900 R. Threlfall & J. A. Pollock in Philos. Trans. (Royal Soc.) A. 193 216 Our..attempts to construct a gravity balance began in September, 1889. 1923 R. Glazebrook Dict. Appl. Physics III. 403/1 In Threlfall and Pollock's gravity balance a quartz thread is mounted horizontally and is attached, at one end to a spring which takes up variations of tension, and at the other end to an axle which can be rotated, in line with the thread. < as lemmas |
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