| 单词 | overhead projector |
| 释义 | > as lemmasoverhead projector overhead projector n. a projector, used esp. for educational purposes, which projects an image from a horizontally positioned transparency on to a vertical screen by means of light passed upwards through the transparency and then through lenses mounted above it; abbreviated OHP. ΚΠ 1954 Amer. Sociol. Rev. 19 707/1 The experimenter operated a Vu-Graph overhead projector. 1992 Chicago Tribune 12 Nov. i. 3/3 (caption) Using an overhead projector and a transparency filled with equations, Yue Chen..discusses the decomposition of quark models. < as lemmas |
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