lì bì 力臂 拼音 lì bì 注音 ㄌ一ˋ ㄅ一ˋ 词语解释力臂[ lì bì ]⒈ 杠杆的受力点和支点之间的距离。英arm of force;国语辞典力臂[ lì bì ]⒈ 物理学上指杠杆上支点至力点的距离。英语lever arm (i.e. perpendicular distance from the fulcrum to the line of force)法语bras de levier 分享到：