| 单词 | sine bar |
| 释义 | > as lemmassine bar sine bar n. Mechanics a device used to set out or measure angles accurately, in which one end of a bar of known length is raised on gauge blocks. ΘΚΠ the world > relative properties > measurement > measuring instrument > [noun] > for measuring angles protractor1602 recipiangle1728 goniometer1766 trigonometer1767 repeating circle1799 angulometer1817 sine bar1915 1915 Engineering 8 Jan. 42/3 A sine-bar is a flat strip of steel, planed true all over, upon which are fixed two hardened and ground plugs, 1 in. in diameter, 10 in. apart. 1975 G. Bram & C. Downs Manuf. Technol. i. 19 The sine bar is commonly used for marking off and checking the angle of a workpiece. < as lemmas |
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