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单词
pentaprism
释义
pen·ta·prism
\ˈpentə+ˌ-\
noun
Etymology:
penta- + prism
:
a pentagonal prism having one angle 90° and the others 112° 30′, producing a constant deviation of 90° for any wavelength, and used as a reflector in range finders
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更新时间:2025/9/4 14:11:26