1.
Water seeping through underground layers to cause flooding is a serious problem in open pit mines.
地下涌水引起水灾是凹陷露天矿的一个大问题。
2.
STUDY ON SPATIAL PRINCIPLE OF STEEPING THE SLOPE ANGLE IN JINDUICHENG DEEP OPEN PIT
金堆城凹陷露天矿加陡深部边坡角的空间原理研究
3.
A natural hollow or depression in the body or an organ.
（人体等上的）凹窝躯体或器官上天然的洞或凹陷
4.
A strip of torn envelope peeped from under the dimpled pillow.
凹陷的枕头底下露出一小截撕破了的信封。
5.
Natural Gas Resources Evaluation and Exploration Prospect in Dongpu Depression
东濮凹陷天然气资源评价及勘探方向
6.
Gas Distribution and Reservoir-forming Characteristics in Langgu Depression
廊固凹陷天然气分布及成藏特征分析
7.
The degree of concavity in such a depression.
凹陷，凹度这种凹陷的程度
8.
Improvement and Application of Draniage System of Deep Concave Mining of Qidashan Open-pit Mine
齐大山深凹露天铁矿排水系统的改进与应用
9.
Key Technology About Deep Mining of Surface Mine with Inclined Coal Seam
倾斜煤层深凹露天矿深部开采关键技术研究
10.
The hollow between a woman's breasts, especially as revealed by a low neckline.
乳沟，胸槽妇女两乳间的凹陷，尤指低领口展露的部分
11.
hollow scar left on the skin,esp after smallpox;pock-mark
皮肤上凹陷的疤痕;（尤指天花的）麻点,痘痕.
12.
an ornamental sunken panel in a ceiling or dome.
天花板或圆屋顶上的一块凹陷的装饰性的板。
13.
ANALYSIS ON GAS ACCUMULATION CONDITIONS IN MACHANG AREA OF DONGPU SEG
东濮凹陷马厂地区天然气成藏条件分析
14.
Research on the Charge Times Stages of Deep Natural Gas in the Dehui Depression, the South Songliao Basin;
松辽盆地南部德惠凹陷深层天然气成藏期研究
15.
Study on kinetics for generating natural gas of Shahejie Formation in deep-buried sags of Dongying Depression
东营凹陷深层沙河街组天然气生成动力学研究
16.
Thermal Simulation Experiment on the Generation of Saline Lacustrine Natural Gas in Donying Depression
东营凹陷盐湖相天然气生成的热模拟试验
17.
Genesis and source of the natural gas under the Es_4 salt-gypsum beds in north Dongying Depression
东营凹陷北部沙四段盐下天然气成因及来源
18.
Drilling Fluid Technology for Wells Drilled in Kuche Sag to the South of Tianshan Mountain.
天山南库车凹陷复杂构造带钻井液技术