To solve these problems,steel rings were replaced by lubricated rings.
介绍了钢质钢领在玻璃纤维并捻生产中存在的一些问题,为了解决这些问题,采用含油钢领替换钢质钢领在玻璃纤维并捻机上使用。
Zn-Ni alloy electroplating of steel oil pipe;
输油钢管电镀Zn-Ni合金
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