| 单词 | well-spherometer |
| 释义 | > as lemmaswell-spherometer well-spherometer n. Optics (now rare) a form of spherometer incorporating a cylindrical aperture, for accurately measuring the radius of curvature of a lens. ΚΠ 1886 Amer. Jrnl. Sci. 131 67 Other and simpler forms of the well-spherometer suggest themselves. 1916 Biogr. Mem. (National Acad. Sci. U.S.A.) 8 263 The other [paper], published in 1886..was upon a well-spherometer of his own invention. < as lemmas |
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