The completeness and application of oil well pump series with soft sealing plunger;
软密封柱塞抽油泵系列的完善与应用
Analysis on sealing failure of myriameter drilling mud pump plunger and improvement measures
万米钻井泥浆泵柱塞密封失效分析及改进
Measures taken to prevent abrasion of the plunger in cylinder sleeve of a cryopump and to improve sealing performance
低温泵缸套柱塞防磨损和提高密封性的措施
Research on improvement of reciprocating seal life of special piston pump
提高特殊柱塞泵往复密封寿命的优化设计
Large-diameter cylinder seal structure analysis and improvement
基于大直径柱塞缸密封结构的分析与改进
The transformation on sealing components of glass pipeline in import sulphuric acid refine device from abroad and sealing structures of the imported high pressure plunger pump is introduced.
介绍了引进硫酸精制装置中玻璃管路密封件以及高压柱塞泵密封结构的改造。
If it does not drop but there is a small leakage at test cock No.2, then No.1 ball valve has a small leak, but No.1 check valve is tight.
如果水柱没有下降，但是测试旋塞2号有点泄漏，则1号球阀有点泄漏，但是1号止回阀密封紧密。
If it does not drop, but there is slow leakage at test cock No.3, then No.1 ball valve has a small leak, but No.2 check valve is tight.
如果水柱没有下降，但是测试旋塞3号有点泄漏，则1号球阀有点泄漏，但是2号止回阀密封紧密。
Piston rings not sealing (oil being consumed by the engine).
活塞环没密封（引擎用油）。
Study on Corks and Synthetic Closures Sealing Wine
软木塞和高分子塞密封葡萄酒的研究
Maintenance simplified by easily replaceable piston seal and steel reinforced renewable rubber disc.
更换活塞密封环和钢胶复合密封板简单方便。
Reciprocating plunger seals have been substitute by mechanically or hydraulically actuated diaphragms in diaphragm pumps.
往复活塞密封被机械密封和液力隔膜泵所替代。
Development and Application of Bridge-plug Sealing Detection String in Thermal Production Well
热采桥塞堵水验封管柱的创新与应用
Finite Element Analysis on the Sealing Structure of the Bulkhead for a Columniform Dewar
柱形杜瓦瓶端盖密封结构有限元分析
Study on Seal Element of Water Hydraulic Single Prop;
水介质单体液压支柱密封元件的研究
KJDT Monomer Shore Airproof Quality Measure System;
KJDT单体支柱密封质量监测系统
Single Hydraulic Pillar Sealing Systems Analysis and Research
单体液压支柱密封系统的分析与研究
Some pistons have seating rings of metal or leather.
有些活塞上有金属或皮革的密封环。
Improvement of Actuator Piston Seal Assembly for Water Turbine Driven Generator
水轮发电机组接力器活塞密封的改进
