| 单词 | heliometer |
| 释义 | heliometer —heliometric /hee'lee euh me"trik/, heliometrical, adj. —heliometrically, adv. /hee'lee om"i teuhr/, n. a telescope with a divided, adjustable objective, formerly used to measure small angular distances, as those between celestial bodies. [1745-55; HELIO- + -METER] |
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