1、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。

2、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。

3、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。

4、A concave lens causes rays to diverge as though they are coming from a focal point.
發(fā)散透鏡使光線分開，就好象從焦點(diǎn)上發(fā)出來的那樣。

concave lens翻譯