Its primary functions are to reduce wear and tear between bearing and shaft, and raise longevity of shaft and connection rod.
其主要功能是减少轴瓦与曲轴间的滑动摩擦磨损,提高发动机曲轴及连杆的使用寿命。
The some techniques of guide shaft and expansion excavation are improved for assure the successful construction and raise the safety coefficient.
为保证施工顺利进行,且提高安全性,对正反导井及扩挖系统进行了多项技术改进,提高了安全系数。
The top 15% of the shaft needs to be lined in order to make sure that a rescue capsule that will be used to raise the miners to the surface can run smoothly.
隧道顶部15%的部分必须进行整修,以便将被困矿工带向地面的救援箱能够顺利通过。
The top 15% of the shaft needs to be lined in order to make sure that a rescue capsule that will be used to raise the miners to the surface can run smoothly.
隧道顶部15%的部分必须进行整修,以便将被困矿工带向地面的救援箱能够顺利通过。
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