光学元件；光学部件
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光学元件；光学部件；光学元件；光学部件
A lens or other part of an optical instrument that interacts with light.
The optical components inside the projector need periodic alignment.
投影仪内部的光学部件需要定期校准。
光学元件；光学部件
A lens or other part of an optical instrument that interacts with light.
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