目前生产氢气的方法主要有化学制氢法和生物制氢法两大类。
Up to now, there are two main Hydrogen production methods-chemical and biological methods.
首次针对国产X70管线钢，应用电化学渗氢法研究了硫化氢分压对HIC性能的影响。
Electrochemical permeation hydrogen method was firstly adopted to study the influence of H2S partial pressure on HIC properties of domestic X70 pipeline steels.
通过对产生锡汗缺陷的锡青铜铸件的显微组织和实际生产过程分析讨论了锡汗产生的原因，并探讨了较为经济实用的氧化去氢法消除锡汗的有效性。
Through analyzing the actual producing process and microstructure of the Sn-bronze castings with thedefect of stannic sweat, the cause resulting in the defect in the castings has been discussed.
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