mean wind velocity的用法和樣例：
例句
- The most significant oasis effect is the decrease of both average wind speed and the number of gale days.
綠洲效應最為顯著(zhù)的一個(gè)方面是風(fēng)速的變化，綠洲使平均風(fēng)速和大風(fēng)日數大幅度減少。 - At the same time, minimum temperature and wind speed did not have an obvious trend.All of these variables showed obvious decadal variations.
平均最低氣溫和平均風(fēng)速的變化趨勢不明顯，但所有氣候要素均表現出明顯的年代際變化特征。
