查询词典 function constant

The predictions are performed on the test results obtained by the previous compression tests and published in the literature by Zhan and Ng (2006), which include the swelling tests under constant net stresses, isotropic compression tests and triaxial shear tests under constant suctions. The comparisons between measured and predicted results indicate that the model can quantitatively predict the hydraulic and mechanical behaviour of unsaturated expansive soils.

利用本模型对本论文中膨润土与砂混合物的吸湿试验及常吸力下的压缩试验结果进行了预测，还对詹良通和吴宏伟(2006)进行的吸力控制的非饱和膨胀土三轴试验结果进行了预测，预测结果表明本模型能够定量的统一的描述膨胀性非饱和土的水力特性和力学性质。

The obtained SWCC shows that the results obtained from the two methods can be considered as consistent.4. By using a suction-controllable oedometer for unsaturated soils, a series of wetting tests at constant net stresses and compression tests at different constant suctions are performed on compacted sand-bentonite mixtures to study the coupled hydraulic and mechanical behaviour of unsaturated expansive soil.

两种方法测到的SWCC曲线有较好的一致性。4、采用非饱和土固结仪对膨润土与砂混合物进行吸湿试验及常吸力下的压缩试验，研究了膨润土与砂混合物的水力和力学特性。

Plotting Logarithm of quenching constant against Hammett constant of side-group X of quenchers, a straight line was obtained.

另外，还研究了一系列〓型猝灭剂对咔唑荧光的猝灭，发现猝灭常数的对数同侧基的Hammett常数成很好的线性关系。

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。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。