1.
Packet-Switched Public Data Network , PSPDN
分封交换公众数据网络
2.
Title-granting system was an important part of political life in the Eastern Han Dynasty.
分封制是东汉政治的重要组成部分。
3.
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。
4.
e-component polyurethane sealant
单组分聚氨酯密封胶
5.
Sealed radioactive sources classification
GB4075-1983密封放射源分级
6.
overshot tubing seal divider
打捞筒油管密封分压器
7.
co - opt rebels by giving them positions of authority.
通过封官拉拢叛乱分子
8.
Ten letters that belong in 10 particular envelopes are scrambled and stuffed and mailed at random.
将十封分属十个信封的信打乱，任意装进信封，并随便投邮。
9.
Can Seamer Seaming Process Simulation and First Seam Roller Curve Analysis;
封罐机封罐成型过程仿真及滚轮曲线分析
10.
Finite Element Analyse of the Distortion of Sealing Ring of Spiral Groove Gas Face Seals;
螺旋槽气体端面密封密封环变形有限元分析
11.
Reasearch of packing and sealing technology in high pressure water revolving sealing
高压旋转密封中填料密封技术的分析与改善
12.
Methane Pump Mechanical Seal Failure Analysis and Improvement of Sealing Systems
甲烷泵密封失效原因分析及密封系统改进
13.
Security Analysis and Testing of Ammunition Fuze Sealing Process with Sealing Machine
弹药引信封口机封口过程安全性分析与检测
14.
Finite Element Analysis on Rubber Sealing Y-ring in the Condition of Static Seal
静密封条件下Y形橡胶密封圈有限元分析
15.
Analysis on Image of Soviet Union by the Cover of Popular Cinema
封面中的政治——《大众电影》封面的苏联影像分析
16.
Containment enclosures? Part 2: Classification according to leak tightness and associated checking methods???
封隔箱室? 第二部分：根据密封性和有关的检测方法分级
17.
Sealed under low pressure or a partial vacuum.
抽空密封的在低压或部分真空状态下密封起来的
18.
To match with the spinel, a low temperature frit glass and funnel glass with similar thermal expansion are developed.
分析了封接中材料匹配、浸润性以及再结晶等原理，叙述了封接工艺。