封的例句大全

It can take a second for an email to go around the world,

一封电子邮件转瞬即可环游世界，

Use of end capping agent to increase the yield of thermostable acetal copolymer

利用封端剂提高共聚甲醛的热碱稳定产物收率的研究

The reaction temperature is 150 ℃ and the reaction time was 5h in the end capping reaction.

封端反应中，反应温度150℃，反应时间5h；

At the end capping stage, the reaction temperature is 120 ℃ at first and then 150 ℃, and the reaction time is 5 h. Under the optimum reaction conditions the yield of the product can be up to 86.7%.

在封端反应阶段，反应初期的适宜温度为120℃、后期以150℃为佳，适宜的反应时间为5h，在该条件下收率为86.7%。

Design of Transmission System for High Production Capability Vapor Liquid Filling and Capping Machine

高生产能力含汽液体灌装封盖机传动系统的设计

Research of a Lithium Battery Fully Automatic Bending Ears Capping Machine

锂电池全自动极耳折弯封盖机系统开发

In this thesis, the calculation method of the elastic force and strength of varied section open-ring has been proVided, If this kind seating ring of supporting ring is used in cylinder case, the uniform elastie force ex-erted on cylinder wall by the ring is produced.

本文主要论证了变截面开口圆环的弹力集度及强度校核计算方法，缸套内采用这种密封环或支承环，可使圆环对缸壁沿圆周产生均匀的弹力。

Valve Burning. This is usually an exhaust-valve problem. Any condition that prevents normal exhaust-valve seating may lead to valve Burning.

气门烧伤：这种情况通常发生在排气门。任何妨碍排气门密封面贴合的情况都会导致气门烧伤。

To provide consistent seating performance and prolonged valve life, it is recommended that you purge and flush your Pacific Wedgeplug valve each time it is operated.

为了保持协调一致的阀座密封性能和延长阀门的使用寿命，建议用户在每当操作阀门后都清洗和冲刷美国太平洋楔塞阀一次。

Research of Sealing Structure of Resilient Seated Gate Valve's Gate

弹性阀座闸阀的闸板密封结构分析

Research and design of the metal seated ball valve in water-coal slurry working condition

水煤浆工况用硬密封球阀的研究与设计

Features and designs of a bubble tight, metal seated butterfly valve are introduced.

介绍了金属硬密封蝶阀的结构特点和设计特点。

Metal seated butterfly valve

金属密封蝶阀

The Study of Bell Socket and Electrode of Solid Electrolyte Hydrogen Sensor

固体电解质测氢传感器的套接密封及电极研究

Existing problems of radial double ended mechanical seal used in reactors and their improvement are introduced, thus lengthening lifespan and reducing the cost of overhaul.

介绍了径向双端面机械密封在反应釜应用中存在的问题及改进，延长了使用寿命，降低了检修费用。

"The cost of the card, putting the sticker on it, coding the account number and expiration date, embossing it, the small envelope — all put together, you're in the dollar range."

"卡、贴纸、编码账号和有效期、压印卡片,还有小信封，这些加在一起只要不到一美元。"

This political philosophy made the Chinese highest power setting maintain centralization all the time during thousands years of feudal rule.

这种政治哲学使得在几千年的封建统治中，国家在最高权力的设置上始终保持一元化。

They put in claims for possession of the estate.

他们提出封那块土地所有权的要求。

Shaft seal is adapted, which can bear higher back pressure.

采用进口轴密封，能承受高背压。

Bellows sealed gate valve light activated silicon-controlled rectifier

波纹管密封的闸板阀光激可控硅闸晶体管