查询词典 hooded seal

Mechanical seal supplied with high pressure sealing water is recommended when the slurry pump is installed in series (two stages and above tow stages).and the expeller seal combined with packing seal is used when the pum is installed in single-stage.

对于多级串联采用填料加副叶轮组合式密封，二级和二级以上轴封水最低压力一般为：Pn=其中n≥2；Hi为等i级泵扬程；Hn为第n级泵扬程。对采用机械密封，各级泵的轴封水压力一般要求比泵出水口压力大0.1MPa。

This paper analyzed and summed up the flexible seal structure, seal working mechanism and application field, analyzed the key part with finite element analysis in snubbing service , as follows:Introduced on the composition and working principle of the on-off flexible seal system in snubbing service.

本文主要对井口防喷密封装置的柔性密封结构、密封工作机理及其控制方法进行分析和研究，对带压作业防喷装置重要零部件进行了静力学有限元分析，主要包括以下几个方面：阐述带压作业系统组成与工作原理。

Design accord with API 6A Norm; Body of valve with valve lids, Flashboard with valve set according to needs adopt metal with metal seal up or nonmetal seal up, Valve rod and valve lid between with fall seal up convenient for valve bring press replacing valve stem packing, Dense cover built-up welding hard alloy,Endures cauterization, Endures impact.

设计符合 API 6A 规范；阀体与阀盖、闸板与阀座根据需要采用金属与金属密封或非金属密封，阀杆和阀盖间设有倒密封便于阀的带压更换阀杆填料，密封面堆焊硬质合金，耐腐蚀、耐冲击。

Fixed ball picture ball valve fixed ball valve Fixed chart The advantages of a fixed ball valve 1, sealing grease emergency ambulance: As the foreign media or fire accidents caused by failure of the valve seat Plug Valves seal, valve grease and grease gun providing fast connection, easily and quickly injected into the valve seat seal grease seal parts, ease leak .

固定球阀图片固定球阀结构图固定球阀固定球阀的优势 1、密封紧急注脂救护：由于介质中的异物或火灾造成阀座密封意外失效，注脂阀提供了与注脂枪的快速连接，方便快捷地将密封脂注入到阀座密封部位，缓解泄漏。

Color-seal and Hair-care: Professional color-seal components such as silk protein, vitamin B5 etc will help your hair seal the dyed color and at the same time effectively nourish and keep lasting luster of the hair.

锁色护发：丝蛋白、维他命B5等专业锁色成分，帮助头发锁住染后发色，并有效滋养头发，保持染发后的持久光彩。

Article 7 The signature and seal on a negotiable instrument mean the signature or seal or signature plus seal.

第七条 票据上的签章，为签名、盖章或者签名加盖章。

Article 7 The signature/seal on a negotiable instrument mean signature or seal, or signature plus seal.

第七条 票据上的签章，为签名，盖章或者签名加盖章。

Flexible metal seal butterfly valve is the national focus on new products, high-performance flexible metal seal butterfly valve used one pair of eccentric and a special oblique cone oval seal structure.

弹性金属密封蝶阀是国家级重点新产品，高性能的弹性金属密封蝶阀采用了一个双偏心和一个特殊斜锥椭圆密封结构。

II. c. 10. it is enacted, that no commands or letters shall be sent under the great seal, or the little seal the signet, or privy seal, in disturbance of the law; or to disturb or delay common right: and, though such commandments should come, the judges shall not cease to do right. And by 1 W.

爱德华三世第2年法案第八章和理查德二世第11年法案第十章规定：不得递送加盖国王印章或个人印章的命令或信函，对法律进行干扰；或对共同权利进行干扰或搁置：并且，即使这样的指令送达，法官不应当停止正当的审判。

In order to guarantee canned and the seal movement with has the idle time movement the turnplate operating time operating time to be suitable, while has designed especially six V-belt pulleys which connects with the turnplate, has designed six V-belt pulleys, in order to driving plate after is separated from under the turnplate six to discuss, enters another six theory, drives on the turnplate the axis rotation, completes carries on canned and the seal to the idle time on the turnplate beverage bottle, after, when the turnplate revolves once more, canned and the seal work stops, will enter the idle time condition again until the next time turnplate.

为保证罐装和封口的运动与具有停歇运动的转台工作时间适当，特在设计了一个与转台连接的六槽轮的同时，多设计了一个六槽轮，以便主动拨盘在脱离转台下的六槽论后，进入另一个六槽论，带动转台上的轴转动，完成对停歇在转台上的酒瓶进行罐装和封口，完后，当转台再次运转时，罐装和封口工作停止，直到下次转台再进入停歇状态。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。