production of salt nuder vacuum

• 真空制盐

production of salt nuder vacuum的用法和样例：

例句

1. The brine decontamination is very important to vacuum salt production and this paper had made descriptions for the methods of brine purification.
   卤水净化是真空制盐的一个重要生产环节，该文针对石膏型卤水的处理提出了对卤水净化的一些看法，供盐业同仁讨论。