查询词典 variable-density system

A discrete-variable or digital system has one or more variables known only at particular instants of time, as in Fig.

离散系统或者数字系统，有一到其描述方程为差分方程。

In some conventional fan revolution speed control methods, variable control of the number of revolutions of a cooling fan is performed by a process comprising steps of detecting an actual temperature of cooling target fluid, ie fluid to be cooled by the cooling fan, such as hydraulic oil and circulating radiator cooling water for cooling an engine (such cooling water is hereinafter referred to as coolant), determining a target fan revolution speed by a system of a proportional integral control unit based on the difference between the actual temperature detected and a target temperature, and changing the fan revolution speed based on the target fan revolution speed so as to bring the actual temperature of the cooling target fluid down to the target temperature.

在一些传统风扇转速控制方法，控制变量的数目革命的一个冷却风扇，是由一个过程组成的步骤检测到一个实际温度冷却目标流体，即流体被冷却，由冷却风扇，如液压石油和散热器循环冷却水用于冷却发动机（如冷却水是以下简称为制冷剂），确定一个目标风扇转速由一个系统的比例积分控制单元基础上的差异，实际温度检测和目标温度，并改变风扇转速的基础上，针对风扇转速，使实际温度的冷却液指标下降到目标温度。

In the theoretical model, the consumer expectation is presage latent variable, it affects the consumer\'s sensation quality evaluation, simultaneously is the weight of sensation quality satisfaction appraisal system; Housing price-income ratio sensation, consumer value and consumer sensation quality joint influences consumer satisfaction degree.

在满意理论模型中，消费者期望为前置潜在变量，影响着消费者感知质量评价，同时也是感知质量满意评价体系的权重；房价收入比感知、消费者价值与消费者感知质量共同影响消费者满意度。

Peng Shan, Non-install Integral Performance Simulation of a Cycle Variable Supersonic Through Flow Fan Propulsion System, Journal of Gas Turbine Experiment and Research, Vol.

单鹏，超音通流风扇变循环推进系统内流特性模拟，燃气涡轮试验与研究，12卷1期， 1999年。

Some other build system have special syntax for listing dependent libraries, for example LIBS variable.

其它一些构建系统有特殊的语法来列出依赖库，例如 LIBS 变量。

For Variable Valve Lift system, classical PID control arithmetic was adopted as the main control strategy.

针对可变升程机构，采用了经典的PID控制方法；针对可变相位机构，提出了一种自学习型的控制方法。

A dynamic nonlinear model of permanent magnet linear synchronous motor with single segment primary was established,then the secondary position was taken as the variable to construct the system dynamic simulation model of a PMLSM with several segment primaries.

建立了单段初级永磁直线同步电机变参数、非线性动态模型。在此基础上，以次级位置为参变量，建立多段初级式永磁直线同步电机系统动态模型，并用该模型对一具有4段初级的无绳提升系统能耗制动过程进行了仿真、分析。

In this paper,a kind of frequency variable adjusting speed system based on single-chip microcomputer AT89C51 is introduced as master controller,adopting the SA8281 as a sine wave generator.

摘 要：本文介绍了一种由AT89C51单片机为主控制器的变频调速系统，采用SA8281作为正弦波发生器。

The equation oriented dynamic modeling introduces the time variable into the model system, i.e., the characteristics are variating with time. The modeling of a dynamic process is a combination of process simulation, control theory, chemical unit models and thermodynamics.

而在工业过程中，存在许多不稳定的变化过程，只有通过动态模拟才能更好地掌握这些过程的本质，因此对流程进行动态模拟研究意义重大。

Venetian blind radiators can be replace by the variable emittance thermal suite in thermal control system of spacecraft, and it is one of key technologies for microsatellite.

引 言目前，在许多航天器的热控系统中，采用机械式热控百叶窗，控制航天器与空间环境的热交换，以实现航天器热控目标。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。