qjjm
4、大型煤化工成套设备
3、泵轴向力自身平衡平衡装置及止推轴承设计研究。 1.1.2 ... 百万千瓦超超临界主给 水泵和锅炉给水泵机组. Ⅰ ..... 压裂泵/柱塞泵输出输入功率：≥3000HP； 最高工作 ...
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