1)  three-step
三台阶
1.
The construction technique of three-step ring digging of large section railway line for passenger traffic tunnel surrounding with weak rocks(LevelⅣandⅤ) is introduced based on the practical construction of Jingtang Tun- nel in the new railway line for passenger traffic of Wuguang railway.
以新建武广铁路客运专线XXTJⅤ标成镜塘隧道施工为例,介绍了软弱围岩地质(Ⅳ、Ⅴ级)大断面客运专线隧道三台阶环形开挖法的施工技术。
2)  three-stepped shaft
三台阶轴
3)  three bench method
三台阶法
1.
This paper discusses some problems that exist in traditional three bench method and sums up four kinds of three bench methods commonly used in reinforcing weak surrounding rock from the fields of their applicable conditions and reinforcing method.
本文分析了传统工法存在的问题,总结了实际施工中常用的4种三台阶施工工法以及这些工法的使用条件,并根据三台阶法存在的问题,总结了施工中的一些注意事项及处理方法。
4)  three step ZF probes
三台阶式ZF探针
5)  flyer three step target
飞片三台阶靶
1.
This paper introduces this techniques of side on radiography and flyer three step target.
介绍了X射线侧向照相技术和飞片三台阶靶技术 ,以及利用它们进行激光驱动高压状态方程绝对测量的基本原理和实验的主要结果 ,并作了一些讨论。
6)  three bench excavation
“三台阶开挖法”
1.
The "three bench excavation" is still in developing in our country large stride tunnel construction.
在我国大跨度隧道施工中,“三台阶开挖法”尚处探索阶段,本文结合实际情况,比较“中壁法”和“双侧壁法”,着重介绍了“三台阶开挖法”的开挖工序、支护特点、适用范围、工艺原理、施工组织和经济效益等情况,对于大跨度隧道施工有较高的参考价值。
参考词条
补充资料：苯并三唑-1-三(三甲氨基)-三氟磷酸酯
CAS: 56602-33-6
分子式: C12H22F6N6OP2
分子质量: 442.28
熔点: 136-140℃
中文名称: 苯并三唑-1-三(三甲氨基)-三氟磷酸酯

英文名称: (1-hydroxy-1h-benzotriazolato-o)tris(n-methylmethanaminato)-phosphorus(1++
benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluorophosphate
benzotriazol-1-yl-oxytris(dimethylamino)phosphonium hexa-fluorophosphate(bop)
benzotriazol-1-yl-oxy-tris(dimethylamino)phosphonium hexafluorophosphate
说明：补充资料仅用于学习参考，请勿用于其它任何用途。