免费成人A片免费看|亚洲有码视频在线观看|美女毛片视频激情超碰|91精品国产欧美一区二区成人|久久无码精品一级A片一高潮不断|亚洲性爰专区三级片不卡免费|欧洲另类AV无码国产免费看|免费观看黄片视频|三级黄色网片在线|国产精品一区二区三区网址

單詞乎

dynamic balance

dynamic balance是什么意思、dynamic balance怎么讀

dynamic balance漢語翻譯

【化】 動平衡; 動態(tài)平衡
【醫(yī)】 力平衡

dynamic balance英語解釋

名詞 dynamic balance:

  1. (aeronautics) the state of equilibrium in which centrifugal forces due to a rotating mass (e.g., a propeller) do not produce force in the shaft and so vibration is reduced
0
糾錯