添加剂：在溶液中含有的能改进溶液电化学性能或改善镀层质量的少量添加物。

Additives: in containing the solution can improve the solution or improve the electrochemical properties of the coating quality a few additives.

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目的：研究枸橼酸铁铵作为胃肠道阴性对比剂对改善磁共振尿路成像(MRU)质量的价值。

AIM: To study the value of oral ferric ammonium citrate (FAC) solution as a negative gastrointestinal contrast agent in MR urography (MRU).

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混合粘结剂的的应用，缩短了制壳生产周期，提高了精铸件的质量，改善了劳动条件，减少了环境污染，大幅度降低了生产成本。

Using the mixed binder can shorten the shell making period, improve the quality of the investment casting, improve the work condition, and reduce the circumstance pollution and production cost.

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