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Terms for subject Oil / petroleum containing 转镜 | all forms | in specified order only
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换镜转盘nosepiece
旋转三棱镜ax icon
旋转扫描分光镜rotary-scanning spectroscope
旋转扫描镜rotating scan mirror
物镜转换器nosepiece
转镜照准仪tube-in-sleeve alidade
镜头转移pan