convex lens [光] 凸透镜 ; 凸镜头 ; 凸球镜片 ; 缩小镜
plano-convex lens [光] 平凸透镜
double convex lens [光] 双凸透镜 ; 双凸面镜
cylindrical convex lens 柱面凸透镜 ; 柱形凸透镜
plane convex lens 平凸透镜
opal convex lens 乳白色凸透镜
plano convex lens 平凸透镜
purple convex lens 紫色凸透镜
plan-convex lens 透镜组由两块平凸透镜
plane-convex lens 平凸透镜
Water surges from the cells on the inside of the leaf to those on the outside, causing the leaf to rapidly flip in shape from convex to concave, like a soft contact lens.
水从叶子内部的细胞涌向外面的细胞，导致叶子迅速地从凸向凹翻转，就像一片柔软的隐形眼镜。
They're lenses because they're convex vessels, and when they're full of water, they act as a lens and you see the horizon in them, upside down and backwards.
它们是透镜，因为它们是凸面容器，当它们盛满水后，它们可作为透镜使用，你可以看到它们里面上下颠倒的地平线。
Just as a double convex lens enlarges so a double concave lens reduces.
正象双凸透镜可以放大那样，双凹透镜也可以缩小。
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