perch plate
(geology, paleontology) A subdivision of the Jurassic period.
A plate or block above or below a carriage-reach, at the kingbolt.
(medicine) The presence of koilocytes usually in the anogenital region or the uterine cervix.
A device for testing the refractive power of lenses.
点検中、整備士はキングボルト付近にある、キャリッジの届く範囲の上下に位置する支持板がずれており、再固定が必要だと気づいた。
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DiQt
Free
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