這個儀器的設計能力應該是幾年就可以探測到一次。如果再改進一下，應該一年可以測到幾次吧。

來源: 宇之道於 2016-02-16 13:12:18 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.