名词
中文翻译：偏心抛物面镜
同义词：
['ellipsoidal mirror', 'off-axis mirror']
例句：
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1. The off-axis ellipsoidal mirror is used in the telescope to correct for parallax.
这个偏心抛物面镜在望远镜中用来校正视差。
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2. Theoff-axis ellipsoidal mirror is a crucialcomponent of the optical system.
这个偏心抛物面镜是光学系统的关键部件。
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3. The off-axis ellipsoidal mirror was designed to improve imagequality.
这个偏心抛物面镜被设计来提高图像质量。