查询词典 proportionality constant

Constant load stress: Constant load refers to the structure of the shelf itself, self-respect, and the Housing Connection C-shaped steel frames, purlins, the Housing frame, roof, panel weight.

受力恒荷载：恒荷载指货架本身结构的自重，连接C型钢和房架、檩条、房架、屋面板、墙板的重量。

According to the analysis and computational results in this thesis, although the actual structure and work conditions of the pressure vessel in nuclear power station are much more complex than that of the pressure vessel model, the program FEARPV still can get quite good convergence on the plasticity andcontact iteration. And also the program FEARPV has good value stability, and good regularity. During the heating, compression, constant temperature, constant pressure, cooling and decompression process, the regularity is basically in common with that of the pressure vessel model.

由本文分析计算可知，虽然电站核压力容器的结构及计算工况较压力容器模拟体复杂得多，然而反应堆压力容器瞬态密封有限元分析程序对塑性迭代和接触迭代仍具有很好的收敛性，数值稳定性好，得到的结果具有良好的规律性，在升温、升压、恒温、恒压、降温和降压等过程中其规律和压力容器模拟体基本相似。

The working process and situation of the tube of constant current tube scanning circuit is introduced, which provides theoretic foundation for confirming the working situation of constant current tube .

本文论述了恒流管扫描电路管子的工作过程及工作状态，为确定恒流管的工作状态提供了理论依据。

The principle and current loop dynamic response are analyzed for both constant frequency current mode control and newly presented quasi-constant frequency hysteresis PWM control, experiments have been carried out to proof the analysis.

文中对现有的固定频率电流模式控制方法和所提出的准固定频率PWM电流控制方法的原理和闭环响应进行了分析，并通过实验证实了分析的正确性。

A novel quasi-constant frequency hysteresis PWM control approach is presented in this paper. Frequency feedback is introduced in hysteresis current control to stabilize switching frequency. Comparing with the common used constant frequency current mode control, the new approach has better stability, faster transient and higher precision, as well as elimination of sub-harmonic oscillation.

摘 要：本文提出了一种新的准固定频率滞环PWM电流控制方法，该方法在滞环电流控制的基础上，引入频率反馈控制，使开关频率基本固定，解决了目前广泛使用的固定频率电流控制方法具有的次谐波振荡的问题，并且具有稳定性好、相应速度快、控制精度高的优点。

Quasi-constant torque control is used when the speed is lower than 125 km/h,and constant power control is applied when the speed is higher than 125 km/h.

在速度低于125km/h采用准恒转矩控制，速度高于125km/h采用恒功率控制。

Quasi-constant torque control is used when the speed is lower than 125 km/h, and constant power control is applied when the speed is higher than 125 km/h. Direct rotor flux oriented control system is employed and three-level neutral point clamped traction inverter with SVPWM control is adopted.

在速度低于125km/h采用准恒转矩控制，速度高于125km/h采用恒功率控制，采用直接转子磁场定向控制系统，牵引逆变器采用空间电压矢量控制的带中点钳位二极管的三电平拓扑结构。

Locomotive characteristics of constant current quasi-constant speed control mode, can be a good start to play the greatest traction locomotives, locomotives equipped with air switch / slide protection system, the transfer axle load compensation control, wheel-rail lubrication system, automatic train safety monitoring device.

机车采用恒流准恒速的特性控制方式，能较好地发挥机车最大起动牵引力，机车装有防空转／滑行保护系统、轴重转移补偿控制、轮轨自动润滑系统、列车安全监控装置。

Its main production environment testing, the mechanical material testing equipment, main products have Standard / Programmable constant temperature and humidity machine, walk-in constant temperature and humidity room, the aging chamber, hot and cold impact testing machines, vibration test machine, drop test machine, compression tension tester, salt spray test machine, ultraviolet radiation, rain test chamber, sand and dust and all kinds of oven chamber, but also according to customer demand for design and production of non-standard environmental testing equipment and various types of large-scale trial into the climate Room.

其主要生产环境试验、力学材料试验设备，主要产品有标准型/可程序恒温恒湿机、步入式恒温恒湿室、老化试验箱、冷热冲击试验机、振动试验机、跌落试验机、压拉力试验机、盐雾试验机、紫外光照、淋雨试验箱、砂尘试验箱及各类干燥箱，还可根据客户的需求设计生产非标环境试验设备及各类大型步入气候试验室。

"Kv ·= constant" principle, a sense of freedom laminated springs and valve switching power systems Plug Valves constitute △ P / S =εL S-feeling film work area,ε-spring Hook coefficient, L-valve stroke From this position of valve travel decisions every size of △ P value, if the valve travel position of the Kv and inversely proportional to the G = Kv · a constant value.

&Kv·=常数&原理，自由弹簧和感压膜构成阀门开关动力系统△P/S=εL S—感膜工作面积，ε—弹簧的胡克系数，L—阀行程由此可知阀门的每一个行程位置决定△P值的大小，如果阀行程位的Kv与成反比，则G=Kv·是恒定值。

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。