查询词典 valve

Currently, domestic production has successfully developed a PWR Island Grade Ⅰ electric valve, check valve; Nuclear Grade Ⅰ electric bellows globe valve, fast breeder reactor using nuclear electric bellows Ⅱ grade cut-off valves with sodium high level of nuclear valves.

目前，国内已成功研制生产了压水堆核岛核Ⅰ级电动闸阀、止回阀；核Ⅰ级电动波纹管截止阀、快中子增殖反应堆用核Ⅱ级电动波纹管钠截止阀等具有较高水平的核级阀门。

Applied to the control valve angle stroke main valve, butterfly valve and so on.

应用于角行程控制的阀门主要有球阀、蝶阀等。

We know that, with the exception of butterfly valve and the valve is completely symmetrical in structure, all other structures are asymmetric valve.

我们知道，目前除了蝶阀和隔膜阀在结构上完全对称外，所有其他结构的调节阀都是不对称的。

According to the problem exiting pneumatic change direction valve,by using the good property of engineering ceramic material,a new pneumatic change direction valve with ceramic valve core as seal pairs have be designed.

根据气动换向阀存在的问题，利用工程陶瓷材料的优良性能，设计出采用陶瓷阀芯作为密封副的新型气动换向阀，并进一步阐述了陶瓷阀芯换向阀的工作原理和特点。

Chapter 4 firstly analyses the generation mechanics, calculating method and interference effect of flow force in the outflowing large-capacity proportional valve. Then it not only presents a structural design to compensate the flow force according to the performance characteristic of the cone valve, but also calculates and simulates the flow field at the valve port through CFD software Fluent6.0. At last it studies the influence of compensation structure parameters and obtains better projected dimensions.

第四章主要阐述了电液大流量控制阀的液动力产生机理，计算及其对系统的干扰作用，在此基础上针对该阀的结构和工作特点提出阀芯所受液动力的补偿方法和结构，然后对阀口处的流场进行了有限元仿真计算，探索了液动力大小与补偿结构的各参数之间的关系，最后得出能实现液动力补偿的合理结构。

In the fully open and full closed when the ball and valve seat sealing HQ41 sliding path roller type check valve and the dielectric isolation, high-speed through the valve sealing of the medium will not be eroded.

在全开和全闭时，球体和阀座的密封面与介质隔离，因此高速通过阀门的介质不会对密封面侵蚀。

Before assembling the ball valve seat sealing surface and be equipped with decent research, and then placed in the closed position the sphere, the installation of left valve, adjusting the gasket, tighten the screws, static pressure irrigation does not leak, this valve can be guaranteed under the seal test seal.

装配前阀座密封面与球体面应配研，然后将球体置于关闭位置，安装左阀体，调整垫片，拧紧螺钉，静压灌水不漏，则此阀在密封试验下即可保证密封。

Close discharge valve, the need to open and close with the Coma Berenices two pieces formed between the sealing suce sealing certain specific pressure, while also overcoming the stem and the packing between the stem and the nut thread between the stem end Department and other friction parts bearing friction, and must exert a certain degree of closing force and closing moments, PUMP CONTROL VALVE EN700X the valve in the open and close the process, the required hoisting hoisting force and torque is the change, Its maximum is in the closed or open end of the initial transient instantaneous.

关闭放料阀门时，需要使启闭件与发座两密封面间形成一定的密封比压，同时还要克服阀杆与填料之间、阀杆与螺母的螺纹之间、阀杆端部支承处及其他磨擦部位的摩擦力，因而必须施加一定的关闭力和关闭力矩，阀门在启闭过程中，所需要的启闭力和启闭力矩是变化的，其最大值是在关闭的最终瞬时或开启的最初瞬时。

In recent years,research has involved percutaneous aortic valve replacement,percutaneous mitral valve reconstruction and even percutaneous pulmonary valve replacement after successful application of percutaneous mitral commissurotomy in clinical practice.

除经皮二尖瓣分离术外，近年来还涉及经皮主动脉瓣替换、经皮二尖瓣修复以及经皮肺动脉瓣替换等领域，并取得了一定的成果，文章对此作一概述。

The Adolph accurate dynamic model cannot describe the movement of the reciprocating pump valve at the moment of opening, thereby a new accurate dynamic model for describing the motion law of an automatic conical valve is set up, in consideration of the condensability of the fluid, the Westphal's effect, the condition of the continuous flow of fluid and the dynamic characteristic of pump valve's motion.

针对阿道尔夫往复泵泵阀精确运动微分方程在泵阀开启瞬间存在奇点的不足，综合考虑液体可压缩性、魏氏效应、液体连续流条件及泵阀运动的动力特性，建立了描述往复泵自动锥形阀运动规律的精确运动微分方程。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷