We first consider the m / m / s queueing model with two priorities . through the analysis of state transition - rate equations of two priorities , the average queue length at the input or output of communications systems is derived 首先考虑带有两个优先权的m m s排队模型，通过对两个队列的状态转移方程的分析，给出了通信系统输入输出线上的稳态队长。
Almost every program for programming a plc controller possesses various useful options such as : forced switching on and off of the system input / outputs ( i / o lines ) , program follow up in real time as well as documenting a diagram 几乎所有用于为plc控制器编程的程序都拥有各种不同的选项，例如系统输入/输出（ i / o线）的强制开关，程序实时跟踪以及图表验证。
On the basis of party " s education policy we have established college students " object system , and these objects are the very results that we need , which are correspondent the system should be input if we want to reach the objects 根据党的教育方针，我们建立了大学生的目标体系，这些目标就是我们所追求的结果，是系统的输出。要达到这些目标，就要给系统输入。
The state feedback controller can be obtained by solving an lmi . furthermore , the way to design the state feedback controller is studied for a class discrete system with nonlinear coupled perturbations of system inputs and system states 进而讨论了具有非线性耦合扰动(系统输入与系统状态之间的耦合扰动)的离散系统反馈控制器的设计方法，给出了该类系统状态反馈控制存在的充分条件。
The curve which describes the relationship between input snr and frequency of operating is made which could be used in choosing the operation frequency band . third , the rational and anti - jam properties of spread spectrum communication system are summed up 综合地波场强与大气噪声场强跟工作频率的关系，得出了工作海域上地波通信系统输入信噪比与工作频率的关系曲线，为工作频段的合理选择提供了基础。
A hedgerow system of shrubs and herbs could reduce input labor energy , decreasing input energy and input energy consumption greatly and resulting in increased efficiency of input labor energy utilization and biomass and energy output / input ratio of the main crops 2 ) “作物果树类植物篱”系统输入能总量和有机能输入量大幅度增加，因此有利于优化输入能结构，促进坡地生态系统良性循环和集约高效农业发展。
In practical production , a group of measurement data describing the system input status could be represented as a pattern point of the space , thus the study on output - input information is converted to study on distribution state of pattern points of different input result in space 在实际生产中，描述该系统输入状态的一组测量数据，可表征为空间中的一个模式点。所以，对系统输出一输入信息的研究就转化为对空间中不同输入结果的模式点的分布行为的研究。
Regarding foundation - pit scope of numerical analysis as a system ; settlement of foundation - pit boundary , displacement of retaining structure and swell of foundation - pit bottom as output of the system ; factors during construction of draining water , earth excavation and retaining structure as input of the system 为此视基坑数值分析范围为一个系统，基坑周边沉降、支护结构位移和坑底隆起为系统输出量，降水、开挖和支护施工各工况中变化的因素为系统输入量。
Then the difference between the output of the trained neural networks and that of the actual system is used as a residual , which detects the sensor fault . the diagnosis can then be performed by further exploiting the information provided from the residual signals according to certain rules introduced in detail in the thesis . simulating results show that the method can isolate any fault of the sensors in any input types and normal work frequencies 仿真结果表明，基于神经网络观测器的故障诊断方法在系统正常工作频率范围之内，不受系统输入类型和故障的类型的影响，只要故障对系统的特性发生影响(系统参数漂移3 ) ，通过神经网络观测器的残差判别函数可以诊断出故障。
Abstract : this paper gives a design method of servo systems input signal , which is based on exact requires of stepping servo systems and combining of traditional form of input signal . it can be easily realiaed by computers and flexiable adjusted by users . the authentication of this approach is also given 文摘:在基于步进化伺服系统输入信号的实际需求，结合传统伺服系统输入形式，采用曲线拟合的方法，提出一种既便于计算机实现，又可灵活调整的输入信号设计方法，并给出相关的证明。
