A.大約5倍 B.10~20倍 C.30~40倍 D.大約50倍 E.80~100倍
A.對(duì)流層B.平流層C.中間層D.熱成層E.逸散層
A.對(duì)流層 B.平流層 C.中間層 D.熱成層 E.逸散層