Many thanks to your permanentsupport to Yifon Translation Co., Ltd.
非常感谢你长期以来对译丰公司的鼎力支持。
2
And then, the rational form of section and permanentsupport of primary tunnel in high-temperature mine is put forward.
进而提出热害矿井主要巷道的合理断面形式和永久支护形式。
3
This paper presents the prepressing and installation technology of the temporary support saddle, and the installation and grouting technology of the permanentsupport saddle.