1.
Technique of Putting in Stalk Through Pulling Apart Core in Coring with the Long Core Barrel in Sichuan Hard Rocks
硬地层拨断岩心接单根长筒取心技术
2.
Construction Techniques by Shield Tunneling Method in Upper-Soft Lower-Hard Ground
上软下硬地层中盾构法隧道施工技术
3.
Study on Impregnated Diamond Bit's Optimal Design for Hard Formation
适合坚硬地层孕镶金刚石钻头优化设计研究
4.
PD VORTEX APPLICATION IN HARD ABRASIVE FORMATION IN HORIZONTAL WELLS
VorteX技术在研磨性硬地层水平井中的应用实践
5.
Research on Tunneling Technology in Hard and Mix Ground by Shield Machine;
盾构在硬岩及软硬不均地层施工技术研究
6.
Stage V: Lesion is covered by a tough membranous layer that may be rigidly adherent to the ulcer base.
五期：损伤被一硬膜层覆盖，该硬膜层可能牢固地附着于溃疡基。
7.
they found a bed of standstone.
这一地层的岩石非常坚硬。
8.
and they did not cut the scarred earth.
雨水并冲裂结了一层硬壳的土地。
9.
Research on the Deformation Rule of Surface Movement Caused by Mining under the Conditions of Thick Alluvium and Hard Solid Rock;
厚松散层厚硬岩层开采地表移动变形规律研究
10.
Analysis on explosion parameters of blast seismic exploration in carbonatite rock
硬岩地层爆破地震勘探的激发因素分析
11.
Grey prediction of data sequence of the hardness in shallow groundwater in Luoyang
洛阳市浅层地下水硬度的灰色数列预测
12.
Open Hole Drilling with Cemented Carbide in Songyuan Oil Shale Formation
松原油页岩地层硬质合金裸孔钻进技术
13.
Key Technologies of Long-Distance Shield Boring in Hard Rock
长距离硬岩地层盾构施工关键技术研究
14.
Research on the Minimum Rock Cover Thickness of Underwater Tunnel in Alternating Layers of Hard and Soft Rocks;
软硬岩交互地层水下隧道最小岩石覆盖层厚度研究
15.
Today the outer layer or crust is cool and hard, while the core is probably hot and molten.
今天，地球的外层，即地壳又冷又硬，地心则可能炎热且呈熔融状态。
16.
A large section or block of the earth's crust that is more rigid than the surrounding rock and has been moved or displaced as a unit.
断层地块一大块比周围岩石更坚硬的、曾发生过整块位移的地壳
17.
Distribution and evolution trend of total hardness of shallow groundwater in plain area of Henan Province
河南省平原地区浅层地下水总硬度的分布及演化趋势
18.
On the very outside of the earth is a bumpy crust of rock and soil.
地球的最外层是由岩石和土壤构成的凹凸不平的硬壳，