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在Ｎｅｕｍａｎｎ法测量接触角的装置中，引进电位控制参数，较为精确地研究了矿物电极电位与矿物表面接触角的关系。对方铅矿和黄铁矿的研究结果表明：矿物电极电位影响矿物表面润湿性，改变矿物电极电位时，矿物表面接触角发生明显变化，在一定电位下接触角可达最大。
In the measurement of contact angle by Neumann method, the potential control parameters were introduced to study the relationship between the mineral electrode potential and the contact angle of mineral surface more accurately. The results of galena and pyrite show that the mineral electrode potential affects the mineral surface wettability. When the mineral electrode potential is changed, the contact angle of mineral surface obviously changes, and the contact angle reaches the maximum under a certain potential.