... The worst case scenario assumes that the sun is at the zenith in a clear sky (air mass of 1). 阳光最猛烈的情况;是在清朗的天气下;太阳位于天顶. Eastern Continental Air Defense Region 东部大陆防空区 The air mass between the top and bottom plates can also oscillate at the strings' natural frequencies. 面板与背板之间的空气也可以在琴弦的自然频率下共振。 ...
基于1个网页-相关网页
应用推荐