煤矿主、副井是煤矿生产的咽喉。钢丝绳是主、副井提升设备的一个重要组成部分，它直接关系到煤矿正常生产、人员生命安全及经济运
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Channel Details:
- Title: 学院|钢丝绳联盟
- Channel Number: 56079232
- Language: Chinese
- Registered On: October 31, 2015, 2:52 pm
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