The power run steadily, and its brake function was improved apparently, and satisfied with require of safety in production of coal mine.
改进后的制动电源制动性能有了明显提高，运行稳定，能满足煤矿安全生产的要求。
The power run steadily, and its brake function was improved apparently, and satisfied with require of safety in production of coal mine.
改进后的制动电源制动性能有了明显提高，运行稳定，能满足煤矿安全生产的要求。
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