Dual Density

Aimed at the insufficient seal problems of monolayer mechanical seal and flexible seal, the double seals are applied in four 5×104 floating roof ta nks at Zhenhai station and Baishawan stationof Yong-Hu-Ning crude oil pipeline.

针对浮顶油罐单层机械密封和软密封存在的不足,在甬-沪-宁原油管道镇海、白沙湾等站场新建的4座10万m3浮顶油罐上采用了双重密封。

The paper uses encrypt and position double secret key and adopts the mothod of non-plane,imbedding and relevance recovering based on the character of VHS,etc in the algorithm.

引入了加密、位置双重密钥;采用了非位平面及基于VHS特性的嵌入和相关恢复等方法。

This article shows that the two ply secrecy of phonetic is obtained by using the technology of Active Passive Dimension chaos synchronous control and gives how to stimulate the whole process of encoding and decoding.

本文利用 APD混沌同步控制技术 ,实现了对语音信号的双重保密 ,并通过计算机模拟了信号加密解密的全过程 。

The bottom bearing applies both labyrinth seal and frame seal, which have good performance of sealing. The main shaft is anticorrosive.

下轴承端盖密封采用双重密封，可确保密封效果，主轴采用防腐新技术，能保护主轴免受腐蚀。

The dual encapsulated piston wear pads absorb the adverse side loading at start of each stroke.

双重密封活塞耐磨垫在每个冲程开始时能够吸收逆向负载。

radial double mechanical seal

径向双端面机械密封

axial double mechanical seal

轴向双端面机械密封

calculation for bolt load of double-cone seal

双锥密封的螺栓力计算

DSS tubing joint

双密封专用油管接头

Tripe-lips type: the metal shield with long triple rubber lips has considerable large torque and good sealing.

三唇密封形式，金属防尘盖上带有三重细长密封胶唇的严格密封，具有较大的按触密封扭矩。

metal O-ring and nonmetallic O-ring seal

金属-非金属双O型环密封

Application and Dissemination of Double-Vortex Seal in Pipeline Pump.

双螺旋密封在长输油泵上的推广应用

Research on Performance of Dry Gas Seal with Single-row Bidirectional Spiral Grooves

单列双向螺旋槽干气密封的性能研究

Improvement and application of two-control-volume model on labyrinth seal

迷宫密封双控制体模型的改进及应用

The statics analysys for the diuble sealed door of the ITER transfer cask

ITER运输车双密封门结构静力学分析

Brushes of high seal performance are installed om sides of door columns.

门柱密封采用特有的双层毛刷增加了更好的密封性。

Development of E-Shaped Double-Sided Active Sealing Flange Seal Ring for the Braking Pipeline System

制动管系用E形双面主动密封法兰密封圈的研制

double frequency spectral density functio

双重频率谱密度函数

capable of sealing itself as after being pierced.

被穿透后能够重新自我密封。

Remove cover and clean flange and reseal.

拆卸车轴护罩，清洁凸缘并重新密封。

The Technological Reconstruction of the Shaft Sealing System for the Hydrogen Compressor of Continuously Reforming Unit;

重整循环氢压缩机密封系统技术改造