1.
The Mechanical Behavior Analysis for K-derrick and Substructure;
前开口形井架及其底座力学行为分析
2.
Study on Dynamic Characteristic of Double Elevating Drilling Rig Derrick and Substructure;
双升式钻机井架及其底座动态特性研究
3.
The Mechanical Behavior Analysis of Four-leg K-type Derrick and Its Substructure;
四腿落地式K型井架及其底座的力学行为分析
4.
Design rig's mast structure& rig's substructure.
油井的钻机的井架，珩架及底座结构件的应力分析和设计。
5.
Application of the high tensile material to the substructure of the super-deep well's rig derrick
高强度材料在超深井钻机井架底座中的应用
6.
The frame on which a gun carriage moves forward and backward.
炮底架炮架在其上前后移动的炮底架
7.
That belt of land remaining, then, runs round between the well and cliff, and all this space is divided into ten descending valleys,
底脚之间的边界因此是圆形的；在这口井和高高的石岸之间的底层分成了十座山谷。
8.
Submarine Bedforms and Formation Cause in the Outer Shelf of the North of the East China Sea
东海北部外陆架海底底形特征及其成因研究
9.
The substructure is a box-on-box design for easy installation.
采用无棚绳前开口型井架，整体起升，低位安装，方便快捷。
10.
A square base, as for a vase.
底座花瓶等的方形底座
11.
The finite element analysis and optimized design of the offshore workover rig base
海洋修井机底座有限元分析及优化设计
12.
Base structure side crossbearm adds compcting cylinder. (opening aperture of the fork lift packet).
底架侧梁增加压紧汽缸（叉槽开口处）。
13.
The Designing of Observing Zhangbei s Chief Mine s Headframe s Base s Subsidence and Deformation;
张北主井井架基础沉降及变形观测设计
14.
leg base anchorage
井架大腿底脚的固定
15.
bottomless pajamas consisting simply of a long top opening down the front.
简单的上部前方开口的无底的睡袍。
16.
rathole gravel slurry
井底口袋内的砾石砂浆
17.
a small boat of shallow draft with cross thwarts for seats and rowlocks for oars with which it is propelled.
有交叉横木座位和推动前进的橡胶桨架的浅底的小船。
18.
On Un-drained Dredging and Underwater Sealing Construction Technology Using T Shape Sink Well
T形沉井不排水法下沉及水下封底施工技术