By discussion about a half-neutralization in an acid-base equilibrium, we reveal how the three connected species of acid system can coexist in solution with equal concentrations or percent of its conjugate base, and offer the method of preparation for this solution. 通过对鲜见报道的半中和酸碱平衡现象的深入讨论,揭示了相关三组分等浓度或等含量共存平衡的充分必要条件及相应的配制方法;
Buffer Solution usually containing a weak acid and its conjugate weak base, or a salt, of such a composition that the pH is held constant within a certain range. 缓冲溶液化学术语。通常指含有一种微酸和与之结合的一种微碱或盐,并能维持酸碱值基本恒定的溶液。
According to allowable pressure angles, the determinations of an oscillating follower conjugate cam's allowable axle center region and its border curves are analyzed. A method to compute its equivalent minimum base circle radius is given out. 对摆动从动件共轭凸轮按许用压力角确定凸轮轴心许用区进行了分析,给出了摆动从动件共轭凸轮等值最小基圆半径的计算方法。