vane

US

UK

B2 中高級
n.名詞葉片
Mechanical device attached to an elevated structure; rotates freely to show the direction of the wind; a fin attached to the tail of an arrow

影片字幕

風力渦輪機內部 (Inside a Wind Turbine)

07:17風力渦輪機內部 (Inside a Wind Turbine)