天气预报 > 其他 > 每秒7米是几级风
每秒7米是几级风
更新时间: 2020-11-01 00:00:00  

每秒7米是4级风,4级风力5.5~7.9m/s内。风通常用风向和风速(风力和风级)来表示。风速是指气流在单位时间内移动的距离,风的前进速度,用米/秒或千米/小时表示。相邻两地间的气压差愈大,空气流动越快,风速越大,风的力量自然也就大。所以通常都是以风力来表示风的大小。

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