作用于同一物体，而大小相等，方向相反，但不在同一直线上的两个力叫偶力。偶力只能使物体旋转，而不能使之移动。
力偶 [数] [力] couple ; moment of couple ; couple of forces
偶力分量 Component of couple
力偶矩 [力] moment of couple ; torque of couple ; Couple moment ; moment of
回复力偶 restoring couple
力偶臂 [机] arm of couple ; couple arm of ; arm of a couple
离子偶极力 Ion-Dipole Forces ; Dipole Forces
力偶系 [力] system of couples ; couple system
偶力臂 Arm of couple
常伴低热，咽喉痛，淋巴结肿大、肌肉酸疼乏力，关节疼痛，头痛，失眠，不安，记忆力减退，偶伴视力障碍。
It may follow a nonspecific illness with mild fever, tender lymph nodes, sore throat, headaches, weakness, muscle and joint pain, and confusion or difficulty in concentrating.
还就染料与溶剂间的色散力，诱导力，偶极力的相互作用进行了讨论。
And the interactions of dyes and solvents in disperse force, induced force, and dipole force have also been discussed.
增大方铅矿与铁介质间的机械力，二者之间的腐蚀电偶作用和体系的还原性增强，同样不利于方铅矿浮选。
With the increase of mechanical pressure, the corrosion couple action between galena and iron is stronger, which is deleterious to galena flotation.
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