Some phosphoric acid production techniques are introduced, such as nitric acid technique, hydrochloric acid technique, sulfuric acid technique, which use phosphate rock as raw material.
介绍了以磷矿为生产原料的硝酸法、盐酸法、硫酸法等湿法磷酸生产工艺，并对其工艺进行了说明和比较。
The corrosion behavior of sintered NdFeB in nitric acid, hydrochloric acid, vitriol, phosphate and oxalic acid was studied.
研究了剩磁状态下烧结钕铁硼在硫酸、磷酸、氢氧化钠及氯化钠介质中的腐蚀特征。
The corrosion behavior of sintered NdFeB in nitric acid, hydrochloric acid, vitriol, phosphate and oxalic acid was studied.
研究了剩磁状态下烧结钕铁硼在硫酸、磷酸、氢氧化钠及氯化钠介质中的腐蚀特征。
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