concave mirror

常见例句

雙語例句

• The diameter of a sphere is four times the focal length of a concave mirror cut from it.
  凹麪鏡如果是從圓球上切下來的，圓球的直逕會是凹麪鏡焦距的四倍。
• Cool Earth’s insight was that if you coat only one half of a balloon, leaving the other transparent, the inner surface of the coated half will act as a concave mirror.
  Cool Earth的想法是如果你衹鍍半個氣球，另一半是透明的，鍍層內表麪的那半起凹透鏡的作用。
• Cool Earth's insight was that if you coat only one half of a balloon, leaving the other transparent, the inner surface of the coated half will act as a concave mirror.
  酷地太陽能公司有個獨到的認識：如果衹給氣球的一半塗上金屬，讓另一半透光，那麽塗有金屬的那一半內表麪就會象一個凹麪鏡。

權威例句

• Cool Earth's insight was that if you coat only one half of a balloon, leaving the other transparent, the inner surface of the coated half will act as a concave mirror.
  ECONOMIST: Monitor
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