性能

Sealing Valve valve sealing performance Filter is part of the sealing ability to prevent media leaks, it is the valve of the most important technical performance indicators.

密封性能阀门的密封性能是指阀门各密封部位阻止介质泄漏的能力，它是阀门最重要的技术性能指标。

The results of finite element analysis are also coincident with experimental test results. It has been proved that the prsent vacuum vessel's bellows, ports and lower rigid supports are feasible.

最后专门设计了一套力学性能测试平台，运用实验力学方法，对真空室的关键部件进行了力学性能测试，获得了一些相关的实验数据，综合评价真空室的支撑结构和波纹管的力学性能并验证了有限元仿真分析结果。

The fitting algorithm of product section and overall unit performance curves, the plane interpolation algorithm and mathematical method of physical property parameter of various single gas are mainly discussed, and also dealt with the technique of information integration on developing environment and data base application etc.

介绍了设计开发的风机性能信息系统，着重论述了产品段性能曲线和整机性能曲线的拟合算法、各种单一气体物性参数的平面插值算法等数学方法，还涉及到开发环境的信息集成和数据库的应用等技术。

The trail bridge design,the mixture performance test,the temperature between the different layers of the deck surfacing,the traffic investigation and the surface performance observation are introduced in this article.The basic performance of the mixture used in the trial bridge is analyzed through rutting tests at high temperature,bending tests at low temperature,fatigue tests of the composite beam and pull off tests.The rule of the temperature gradient distribution in the pavement and the variety relation ...

介绍润扬大桥钢桥面铺装试验桥的方案设计、试验研究、温度测试、交通量调查和使用性能跟踪观测，通过混合料高温车辙试验、低温弯曲试验、复合梁疲劳试验以及拉拔试验等分析实桥试验沥青混合料基本性能，阐述铺装内各层温度梯度分布规律及与大气温度变化关系，通过使用性能跟踪观测介绍浇注式沥青混凝土+环氧沥青混凝土新型铺装结构的工程效果。

Results showes that the suitable quantity tin can not appeared crystal boundary, and RE phase segregation reduced the tendency of intergranuiar corrosion, current efficiency of anode increased recessive quantity tin appearat crystal boundary with Sn phase, and can not improve the performance of aluminum anode. aluminum alloy, saciiiicial anode, electrochemistry performance, microstructure, tin

本文分析锡含量不同的铝基牺牲阳极的金相结构和电化学性能，阐述合金元素锡对晶粒尺寸、第二相数量、主要第二相组成、电化学性能的影响及铝阳极组织与性能的关系，以及电流效率损失的原因。1实验1.1铝合金熔炼 1号、2号和3号铝合金分别为m一5Zn一0.05In—lMg一0.3RE、舢一5Zn—O.05In一0.1sn一1Mg一0.3RE和m一5Z

The authors calculated the fragility parameters of the samples based on the time-temperature superposition principle of dynamic mechanical performance and the constants C1 and C2 of the WLF equation.

利用DMA研究了天然橡胶及其改性物的低温动态力学性能，测定了样品的动态力学性能参数，并应用动态力学性能的时温叠加原理，由WLF方程的常数C1和C2进一步计算出材料的脆性参数。

With a constant space and different duty ratios, two conditions with high heat transfer performances emerged mainly due to the different degrees of influence of the heat transfer surface area and the rib thickness on the heat exchange performance.

以换热系数进行比较，当占空比为83％左右时，热沉表面温度最低，换热性能最佳；当间距恒定不变而占空比不同时，会出现两个换热性能较好的情况，主要是由于换热表面积和肋片厚度影响换热性能的程度不同。

Analyze quantitatively chilled water with large temperature difference how to affect the performance and energy consumption of pump, chiller, fan-coil unit and surface air cooler and cooled water with large temperature difference how to affect pump, chiller and cooling tower.

对大温差系统的推广应用具有一定的参考价值。分析了外围护结构各部件如外墙、窗户的遮阳性能、玻璃性能、窗墙比、屋顶对空调负荷的影响，得出建筑总负荷与各围护结构的热工性能基本上成正相关。提出了要降低能耗，对围护结构应该采取的措施。

The friction and wear experiments results show that sticking wear takes place during the friction procedure, which results in the poor wear-resisting property of ternary eutectic alloys, due to the low quantity of hard particle of primary phase SnSb; the wear-resisting property of rapidly-solidified Pb-15wt%Sn-15wt%Sb ternary hypereutectic alloys is better than that of as cast ternary hypereutectic alloys.

摩擦磨损实验结果表明，由于三元共晶合金中作为硬质点的初生相SnSb的数量很少，所以在摩擦过程中发生了粘着磨损，导致合金耐磨性能较差；而Pb-15wt%Sn-15wt%Sb三元过共晶合金快速凝固合金的耐磨性能比普通铸态合金的耐磨性能好。

The method of performance analysis and optimal structure design for steam ejector heat pump is introduced. A computer software is designed to fulfill these functions.

针对蒸汽热泵工质的特点，从气体动力学原理出发，将热泵的工质与性能参数用气体动力函数来表示，对具有吸入室、混合室和扩散室热泵的整体性能进行分析，提出了喷射式热泵性能分析计算方法，并编制了相应的计算机软件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。