1.
Monitoring and Measurement Technology of the Emergence of Shallow Buried Unsysmmetrical Loaded Small Guide Hole
浅埋偏压隧道小导洞出洞施工与监控量测技术
2.
"When using wood screws, small starting holes called pilot holes are often drilled first to avoid splitting the wood."
使用木螺钉的时候,首先要钻小洞,叫做导洞,以防止木头裂开。
3.
In some cases, work on the main tunnel progresses a few meters behind the pilot tunnel so that the latter provides ventilation, always a major problem in tunneling operations.
有时，主隧道的掘进紧跟在导洞掘进后面几米，由导洞提供通风。通风一直是隧道掘进中的大问题。
4.
Technical Measures for Safe Excavating of the Upper Portal of the Head-Tunnel in Zhao City
皂市导流洞洞口段上层开挖施工安全技术措施
5.
Research on Hydraulic Characteristics of Reconstructing Diversion Tunnel to Permanent Spillway Tunnel;
导流洞改建泄洪洞衔接段水力特性研究
6.
Construction diversion tunnel(in combination with tailrace tunnel) design of Xiluodu Hydropower Station
溪洛渡水电站导流隧洞(与尾水洞结合段)设计
7.
a small bit that drills a first hole to guide a larger drill.
钻凿初洞来导引大钻头的一种小钻头。
8.
From this cave-room the chairman directed the work of our Party.
主席在这间窑洞指导我们全党的工作。
9.
Xiao Zhang acting as the tour guide, we visited the White Dragon Cave.
小张当导游，我们参观了白龙洞。
10.
Aseismatic Analysis and Optimization Design for Inlet of Diversion Tunnel;
导流泄洪底洞进口段抗震及优化分析
11.
A Study on the Prevention Techniques to Gas of the Diversion Tunnel in Zipingpu Hydro Project;
紫坪铺工程导流洞瓦斯防治技术研究
12.
The concrete pouring and temperature control technology in plugging segment of diversion tunnel
导流洞封堵段混凝土浇筑及温控技术
13.
Our guide led us through a series of caves.
我们的向导引导我们穿过一连串的洞穴。
14.
Study on Value η of Outlet of Diversion Tunnel in Model Test
施工导流模型试验中导流洞出口η值的研究
15.
Construction of the Crown Concrete of the Intersection Section of Diversion Tunnel and Middle Flood Discharging Tunnel in the Jishi Gorge Hydropower Station
积石峡水电站导流洞与中孔泄洪洞交叉段顶拱混凝土施工技术
16.
Concrete construction technique for lining of diversion tunnel(No.1 tender section) of Pengshui Hydropower Station on Wujiang River
乌江彭水水电站导流洞第一标段洞身混凝土施工技术
17.
Study on the Hydraulic Characteristic for Constructing Diversion Tunnels of High Dam Transformed into Spillway Tunnels in a Type of Rotating Flow Shaft
高坝施工导流洞改建为旋流竖井式泄洪洞的水力特性研究
18.
A guide led us through the maze of tunnels in the cave.
向导带领我们通过山洞里如迷宫般的隧道。