68

1114???????? ?

1114???緢?

1114????

???з羰?????????δ??档

??????????????????1114賿6?22???8?52???????NASA????1948?Ρ??13?14??г??

68

?ιΧ????38.44??????29.5????27.5?????????

????10?11o121?11?19481???μ?35.65?????????

???С10%?ε?С14%30%????????????????顣

???18

????14??賿6?22?8?52???????????С????????????????鰮?????????????

?鷱и???????ú??е?￥?赲??????δ???

????1411?21????????????????????

???????1214???????ε??11????3С??￡?????70?￡′????203411￡??18?

?????

?1979?λ??????μ????

NASA?о???????2004???LRO??????????3D??LRO?????и?????????嵽??????????μ??γ?

?NASA?????????????NASA???????????б????NASA????( )