據說北鬥比ＧＰＳ精準呢。另外手機通訊是需要衛星地 - 沒有自己的衛星，中國的手機不會這麽普及

來源: 走你於 2013-06-11 19:54:29 [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.