1.
Analysis of Force and Protection of the Taper Pipe in Directly Buried Heat-Supply Pipeline
直埋供热管道变径处的受力分析与保护
2.
To determine the caliber of(a tube).
确定（管道的）口径
3.
Bi-direction umbrella diameter changing technology for ultrasonic inspection of seabed pipelines
海底石油管道超声检测双向伞式变径技术
4.
INFLUENCE OF BEAM ENERGY SPREAD AND CHANGES OF CHANNEL APERTURE ON BEAM WAKEFIELD
束流能散度和传输管道孔径变化对束流尾场效应的影响
5.
The diameter of the inside of a round cylinder, such as a tube.
口径圆柱体内侧圆的直径，如管道
6.
Relationship between Average Velocity and Radius in Round Pipe Fluid Flow;
圆管流体平均流速与管道半径的关系
7.
Design of Adapter Pipe for Large-Diameter Pipeline
冶金行业大口径管道接管设计与分析
8.
Double Layer SAW Pipe with Large Diameter for Transmitting Oil and Gas
油气输送管道用大直径双层埋弧焊管
9.
Optimal Design of the Pipe-irrigation Based on Pipe Diameter
基于管径的管道输水灌溉管网优化设计
10.
Impact of changing parameters of expanding section on gas-solid flow characters in a changing-diameter riser
扩径段参数对变径提升管内气固流动的影响
11.
The Analysis of Bore Resistance and Ballistic Characteristic Variations of Small-caliber Ballistic Gun
膛阻与小口径弹道炮弹道特性变化的分析
12.
Moral changes and improvement of farmers
农民道德观念变迁与道德提升路径选择
13.
On How Teachers Transform Traditional Moral Outlook to Modern Moral Outlook
教师从传统道德观向现代道德观转变路径探讨
14.
Nominal size for pipe components
GB/T1047-1995管道元件的公称通径
15.
There is a velocity difference across the radius of the pipe.
这条管道半径两端间存在一速度差。
16.
Experiment on Gas Explosion and Restricted Explosion in φ700mm Pipeline
直径700mm管道内瓦斯爆炸及抑爆试验
17.
Welding construction technology for installation of large diameter gas pipeline
大口径天然气管道安装焊接施工技术
18.
Method and installation technology of large diameter PCCPs
大口径PCCP管道安装工艺与方法