main hauling line
... 主发电机 main generator 主卷扬索 main hauling line 主停止阀 main stop valve ...
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通过研究，采用了双线往复门架式牵引系统，自主研制了能实现均衡放索的大吨位主牵引卷扬机、被动放索机构等关键机具。
The hauling system is adopted in accordance with the results of the study. Critical equipment, such as the large tonnage winch and passive unreeling machine, are manufactured.
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