2) large rock-gateway
大断面岩巷
1.
achieved the footage above 1200m/a in large rock-gateway shingle-entry developing in 2005,which put down a base for steady development of mine.
开滦(集团)有限责任公司2005年实现了大断面岩巷单头掘进年进尺超过1200m的水平,为矿井的稳步发展奠定了基础。
2.
Achieved the footage above 1200m/a in large rock-gateway shingle-entry developing in 2005, whick put down a base for steady development of mine.
开滦(集团)有限责任公司2005年实现了大断面岩巷单头掘进年进尺1200m的水平,为矿井的稳步发展奠定了基础。
3) hard rock roadway with small cross-section
小断面硬岩巷道
5) rock drif with large cross-sectional areadip
大断面岩巷下山
6) cross-section
[英]['krɔ:s'sekʃən, 'krɔs-] [美]['krɔs'sɛkʃən, 'krɑs-]
井巷断面
1.
The sizes of cross-section are related to the drivage costs,maintenance costs and ventilation electric costs.
井巷断面大小直接关系到掘进费、维护费和通风电费。
2.
In this paperle sum up the optimization methods presented dy different experts and scholars,put forward a path method of cross-sect-ions optimization,and provide a new technicalmethad for reasonable determination of cross-section.
本文在总结国内外的断面优化方法的基础上,提出了断面优化的通路法,为井巷断面的合理确定提供一种新的技术途径。
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条