短语词组短語harmonic polar curve [數]調和極曲線simple harmonic curve [數]簡諧曲線;簡諧運動曲線compound harmonic curve [數]複諧曲線damped harmonic curve [物]阻尼調和曲線harmonic combination of cam curve 諧波組郃凸輪曲線 返回 harmonic curve