| 单词 | plane-convex |
| 释义 | > as lemmasplane-convex plane-convex adj. = planoconvex adj. 1a. ΚΠ 1668 Philos. Trans. (Royal Soc.) 3 631 The Telescope..with four Glasses, whereof the three Ocular ones, Plane-convexe,..and the fourth a Sphericall Object-glass. 1868 Chambers's Encycl. X. 483/2 The heads of the [croquet] mallets are of various shapes—as the dice-box, which is the most common shape; the plane-convex, the hammer-head, and the cue-shape. 1962 Bull. Torrey Bot. Club 89 162 Petioles 1.2–2.0 cm long (1.5), plane-convex, more or less deeply grooved above. < as lemmas |
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