常見例句雙語例句We have also calculated the mean daily variation of K index of 31 stations of high latitude during the relative magnetic quiet period of year 1957 and 1958.與此同時，我們還統(tǒng)計了1957與1958年高緯度區(qū)31個地磁臺在平靜時每天的平均日變化。 返回 magnetic daily variation