该系列产品可有效进行离子渗硫、离子硫氮共渗等。
The series products is effective for sulfide ion, ion permeation and other diltiazem.
介绍了钢管热冲孔凸模硫氮碳共渗工艺试验。
The test of sulphurized tufftride process for treating the hot piercing punch for steel pipes is introduced.
介绍了钢管热冲孔凸模硫氮碳共渗工艺试验。
The test of sulphurized tufftride process for treating the hot piercing punch for steel pipes is introduced.
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