plano-concave

常見例句

• plano concave lens
  平凹透鏡,球平麪凹透鏡
• plano concave
  adj. 平麪平一麪凹的(平凹的)
• His figure looks very funny in the concave mirror.
  他的樣子在凹鏡裡顯得非?？尚?。
• An indented or concave surface or area.
  凹陷，窪地凹的表麪或地區(qū)
• Just as a double convex lens enlarges, so a double concave lens reduces.
  正象雙凸透鏡可以放大那樣，雙凹透鏡也可以縮小。
• A concave molding with a cross section that approximates a quarter circle.
  飛簷的凹圓線腳截麪近於九十度弧的凹線腳
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