查询词典 seal cutting

With the clue of the "Chinese Seal",the agelong and profound Chinese seal culture is firstly introduced in the paper,then contacting with the jewelry,that the seal is one of the ornaments in the ancient is stated.

以奥运徽宝之中国印为线索，首先介绍了悠久而深远的中国印文化，继而与珠宝首饰相联系，阐述了印章是中国古代的佩饰之一，探求了中国印对现代首饰设计的启迪。

Passing to diagnosis adopt coal machine framework oil seal leak oil,and the framework oil seal leak to oil contain two kinds of forms,a kind is in the bore and coalescence to leak the oil;a kind is an oil seal lips the and axis of revolution sport leak the oil.

通过对采煤机骨架油封处漏油的诊断，骨架油封处漏油有 2种形式，一种是在孔座与接合面处漏油；一种是油封唇口与旋转轴运动漏油。

2 For the low-pressure seal test and high pressure sealing test, does not allow visible leak through the valve flap, the back seat and shaft seal, there is no structural damage (elastic seat and seal surface deformation is not considered as structural damage).

3.9.2对于低压密封试验和高压密封试验，不允许有明显可见的泄漏通过阀瓣、阀座背面和轴密封，并无结构上的损坏(弹性阀座和密封面的塑性变形不作为结构上的损坏考虑)。

Rely on Germany advanced production technology and optimized designing ,we have developed five Directory ,more than 30 series and 800 specification in mechanical seal, packing seal, Gasket board, rubber seal and Auxiliary sealing system.

公司通过依托德国先进的生产工艺，科学优化的设计，现以开发形成了五大类别，三十多个系列，八百多种规格。

Expeller seal combined with packing seal and mechanical seal are adopted to prevent slurry from leakage

可靠性设计，保证了整机平均无故障工作时间大幅度提高

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。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。