1.
Study on the Dynamic Sealing Device of Pumping Units by Injecting Colloid;
抽油井动态注胶式光杆密封装置的研制
2.
It has two stem sealing: one is stuffing box and another is toroidal sealing ring( O-ring).
本阀阀杆密封分为两种形式：一为填料密封；一为O型密封环密封。
3.
Roughness and Rod Speed for Influence of Hydraulic Reciprocating Rod Seals Leakage
粗糙度和杆速对液压往复杆式密封泄漏的影响
4.
Backseat– machined bonnet stem bushing provides back-up stem seal.
(10) 后座-经过精密加工的阀盖阀杆衬套实现后座阀杆密封。
5.
Backseat– machined bonnet backseat provides back-up stem seal.
(9) 后座-经过精密加工的阀盖阀杆衬套实现后座阀杆密封。
6.
Backseat ? machined bonnet stem bushing provides back-up stem seal.
后座-经过精密加工的阀盖阀杆衬套实现后座阀杆密封。
7.
Stem bearing to assure concentric stem rotation, allowing stem packing to provide maximum sealing effectiveness.
阀杆轴承保证同轴阀杆的旋转，使得阀杆填料具有最大的密封效果。
8.
Evolution of four bar mechanisms and creative design of dynamic seal devices
四杆机构的演化与动密封结构的创新设计
9.
Probe into Reconstruction of Rod Seal Device of Intake Gate Hydraulic Hoist in Ankang Hydropower Plant
安康水电厂快速闸门启闭机活塞杆密封改造
10.
Improvement and hermeticity analysis of B type double screw pump curve
B型双螺杆泵型线的改进与密封性分析
11.
The Reasons Analysis and Technical Improvement of Screw Compress Mechanical Seal Leakage
螺杆压缩机机械密封泄漏原因分析及改造
12.
Numerical Analyses of Gas Lubricated Laser Surface Textured Mechanical Seals
激光加工多孔端面气体密封数值分析
13.
Research of Helium Mass Spectrometer Leak Detection Technology on Sealed Adaptation of the Optical Fiber
光纤密封转接的氦质谱检漏技术研究
14.
Determination of isocyanate content in sealant by spectrophotometry
分光光度法测定新型密封胶中异氰酸酯基含量
15.
pressurizing window
密封封口(电缆), 气密口
16.
weatherstripping,thresholds & seals
密封条，门槛及密封胶
17.
This prevents stem from scoring and galling and provides longer disc seal and body life.
这种结构避免阀杆刮伤和磨损，延长阀瓣密封和阀体的使用寿命。
18.
Check whether the packing materials is compacted, should guarantee the sealing of the packing materials without hindering normal work of push rod.
检查填料是否压紧，应保证填料密封性，但又不妨碍推杆的正常工作。