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往复式密封；往复运动唇形密封圈
1、apostille seal───使徒印章
2、reciprocating hacksaw───往复式钢锯
3、reciprocating motion───[机]往复运动；住复式动作
4、crabeater seal───锯齿海豹
5、downcomer seal───降液管液封
6、reciprocating means───往复式装置
7、reciprocating compressor───[机]往复式压缩机；[机]活塞式压缩机；活塞[往复]压气机
8、seal───vi.猎海豹；n.密封；印章；海豹；封条；标志；n. (Seal)西尔（人名）；vt.密封；盖章
9、reciprocating pump───[机]往复泵；循环泵
1、Design of Ultra-high Pressure Reciprocating Seal───超高压往复密封的设计
2、The Evolution Study of Theories, Technologies and Application of Hydraulic Reciprocating Seal───液压往复密封理论、技术与应用的进展研究
3、The paper deals with the theoretical calculation of reciprocating seal for three-plunger pump.───本文叙述了对三柱塞泵往复密封的理论计算。
4、The Improving Design of Reciprocating Seal for Servo Hydrodynamic Cylinder Based on TRIZ───基于TRIZ的伺服液压缸往复密封改进设计
5、Study on the Reciprocating Seal of Hydrodynamic Piston Based on TRIZ Conflict Resolving Theories───基于TRIZ冲突解决原理的液压缸活塞密封技术研究
6、A Study on Evolution of Hydraulic Reciprocating Seal Technology for Construction Machinery───工程机械液压往复密封技术的进化研究
7、paper, the failure mechanism of plunger seals for injection pump used in oil field is investigated and the features of existing reciprocating seal structures are evaluated.───油田注水柱塞泵柱塞密封的失效机理进行了论述，分析了现有几种典型的密封结构。
8、Seal performance tests and operation life simulation of various types of reciprocating seals can be done on this device.───可用于多种规格型式的运动密封，进行密封性能和使用寿命实际模拟试验。
9、Structure Analysis of the Reciprocating Seal Ring in Fracturing Pump───压裂泵往复密封圈结构的分析
1、Also, the measures are conducted for the axial pressure distribution and the leakage rate changing along with the pressure of the reciprocating seal rings.
2、This paper introduces a reciprocating seal with high pressure and small size. The seal is composed of rubber V-ring and PTFE V-ring, and has long lifetime, good sealness and low friction coefficient.