zhèng yán
意思解释：（Normal salt）宋制，场盐例由官收，各有定额，凡额内的盐谓之正盐，与额外之“浮盐”相对。
酸中全部能电离的氢都被金属原子或相当于金属原子的原子团所代替而生成的盐。…
In acid all can the hydrogen of ionization by metallic atom or the salt that are equivalent to metallic atomic atom round place is replaced and be being generated. ...
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