網上有: “The main source of sound from wind turbines is usually aerodynamic noise.”
• 可能和在of後麵有關,of前麵需要? -LinMu- ♂ (0 bytes) () 06/18/2021 postreply 19:00:33
• 不敢肯定,譬如 -ibelieu- ♀ (330 bytes) () 06/18/2021 postreply 19:06:24
• 套在裏麵有點複雜了 -LinMu- ♂ (0 bytes) () 06/18/2021 postreply 19:23:15