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wúyònggōng
机械克服额外阻力(如起重机提起重物时起重机臂的重力以及绳索和滑轮间的摩擦力)所做的功。
{
unavailable work; work done by a machine to overcome extra resistance (such as the gravity of the arm of a crane and the friction between the rope and the pulley in lifting heavy goods)
}
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更新时间:2025/12/5 21:18:29