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  1. ...right. Real image is inverted. Virtual image is erect . 2008-04-12 01:58:22 補充: Re :hlyungsince1986 Sorry.I don't am I wrong. I think...

  2. ...will be the position of the tip of the object. Finally, re -draw the light rays nicely that originate from the object...be on the same side of the lens as the object, and is erect . You could use a method similar to that given...

  3. ...compound leaves fold inward and droop when touched, re -opening within minutes. Mimosa pudica...or "shrinking". The stem is erect in young plants, but becomes creeping...

  4. ...compound leaves fold inward and droop when touched, re -opening within minutes. Mimosa pudica...quot;shrinking". The stem is erect in young plants, but becomes creeping...

    分類:環境 > 其他 - 環境 2006年12月13日