查询词典 valve

The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的"虚拟仪器"的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

Secondly, the flow characteristic of the intake system of pre-mixed spark ignition gas engine was studied on the vacuum pump. The discharge coefficient models of the air valve, the gas valve and the subsystem of the mixer and throttle were modeled. Their working flow characteristics were analyzed. And the dynamic model of the intake system was identified.

其次，在真空泵流量实验台上完成了预混点燃式气体燃料发动机进气系统的流量特性研究，建立了空气阀、燃气阀及"混合器+节气门"子系统的流量系数模型并分析了其工作流量特性；建立了发动机外围进气系统的动态模型。

Existing factory 180 workers, all kinds of professional and technical personnel 15, including five senior engineer with the design, manufacture various types of high and medium pressure valve and vacuum valve capacity.

全厂现有在职职工180名，各类专业技术人员15名，其中高级工程师5名，具有设计、制造各类高中压阀门和真空阀门的能力。

The disclosed valve acts as an integral diverter valve and vacuum break.

公开的阀起―一体的换向阀和真空断路器的作用。

Vacuum partial pressure control system is composed of computer system, vacuum modulation valve and partial pressure pump, of which the valve is one of key parts of the equipment.

真空偏压控制系统由计算机系统、真空调节阀、真空偏压泵等部件构成，其中真空调节阀是设备的关键部件之一。

Sources equipment checks : cold water, vacuum, compressed air, ventilation, nitrogen system; 2 Second, production of electrical equipment checks : Mixing, thermometers, pressure gauge, safety valve and the water supply valve and pipe materials Absorption normal; 3 ③ measurement and control system for communications; Facilities and environmental monitoring system checks; 1.3 production plans and arrange the production cycle length ahead of the relevant staff work schedules.

哪位高手能给翻译一下？①动力源设备检查：冷热水、真空、压缩空气、通风、氮气等系统；②生产设备检查：搅拌电机、温度表、压力表、安全阀及供水和吸放料管道阀门是否正常；③计量和通讯控制系统检查；环保设施和监控系统检查； 1.3 人员安排：根据生产计划和产品生产长短周期提前安排好有关人员作息时间。

The local stress state is improved because of the valve bearing more equable, and the valve is more secure.(3)The lowest absolute pressure is higher then water vaporizable pressure, so no vibration generated by cavitations.

同时，兼顾到调流阀自身的两个主要矛盾：消能与振动的矛盾、调流与过阀损失的矛盾，从水力的角度对该阀进行了优化设计。

VPR pneumatic valve positioner is Yamatake - Honeywell VFR Cam flexure control valve of the special annex.

VPR气动阀门定位器是日本山武——霍尼韦尔公司VFR凸轮挠曲调节阀的专用附件。

On basis of different transport mediums, 20FT fuel and chemical liquid transport tank container is respectively made of carbon steel Q345B and stainless steel 304 and divided into two kinds of being insulated and uninsulated. Insulated tank equipment inputs heating pipe heated by hot oil and steam. Both of the two kinds of tank body are equipped with overflow pipe, anti-liquid overflow breather valve, thermometer, volumeter and exclusive discharge valve and coupling matching with medium.

20FT燃料及化工液体运输罐式集装箱根据运输介质的不同，分别采用碳钢Q345B和不锈钢304制造，分保温和不保温2种，保温罐配备输入热油和蒸汽加热的加热管道，2种罐体均设置溢流管、防冒液呼吸阀、温度计、容量计、和介质匹配的专用卸料阀及接耦。

On basis of different transport mediums, 40FT fuel and chemical liquid transport tank container is respectively made of carbon steel Q345B and stainless steel 304 and divided into two kinds of being insulated and uninsulated. Insulated tank equipment inputs heating pipe heated by hot oil and steam. Both of the two kinds of tank body are equipped with overflow pipe, anti-liquid overflow breather valve, thermometer, volumeter and exclusive discharge valve and coupling matching with medium.

40FT燃料及化工液体运输罐式集装箱根据运输介质的不同，分别采用碳钢Q345B和不锈钢304制造，分保温和不保温2种，保温罐配备输入热油和蒸气加热的加热管道，2种罐体均设置溢流管、防冒液呼吸阀、温度计、容量计、和介质匹配的专用卸料阀及接耦。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。