| 单词 | proof-sphere |
| 释义 | > as lemmasproof-sphere proof-sphere n. rare a small spherical conductor with an insulating handle, used in the same way as a proof plane. ΚΠ 1902 T. O'C. Sloane Standard Electr. Dict. Proof-sphere, a small sphere, coated with gold-leaf or other conductor, and mounted on an insulated handle. It is used instead of a proof-plane, for testing bodies whose curvature is small. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。