查询词典 instability constant

This paper introduces how to use PLC realize PID automation control system in constant liquid level system of waterworks though a instance project. It adjusts liquid level by control the valve though PID arithmetic and deals with outside program, makes the liquid level constant at the expectation value. The adjusting time is the same as manual control, but the water quality is better. Its advantages are reaction rapidness, auto-control disengage intervenor, quick protection of fault, more safety and stabili...

本文以一工程实例介绍了如何用PLC在水厂的滤池实现PID恒水位控制，它通过PID算法和外围的程序处理，通过控制阀门开度来调节水位，使水位基本恒定在期望值，并且阀门调节次数基本与手动调节一样，但水质却明显好很多，更重要的是对现场适应能力强，反应快，而且完全脱离人为干预进行全自动控制，对故障也有快速保护，更具安全稳定性。

This paper introduces how to use PLC realize PID automation control system in constant liquid level system of waterworks though a instance project. It adjusts liquid level by control the valve though PID arithmetic and deals with outside program, makes the liquid level constant at the expectation value. The adjusting time is the same as manual control, but the water quality is better. Its advantages are reaction rapidness, auto-control disengage intervenor, quick protection of fault, more safety and stabilization.

本文以一工程实例介绍了如何用PLC在水厂的滤池实现PID恒水位控制，它通过PID算法和外围的程序处理，通过控制阀门开度来调节水位，使水位基本恒定在期望值，并且阀门调节次数基本与手动调节一样，但水质却明显好很多，更重要的是对现场适应能力强，反应快，而且完全脱离人为干预进行全自动控制，对故障也有快速保护，更具安全稳定性。

When male mated consecutively in a night, mating interval, duration for mating, each mounting, intromission and the last mount, and copulatory mass kept constant, suggesting that male possess a pattern of constant mating investment, which might result from intense sperm competition in this species.

雄兽连续交配时，交配间隔、交配持续时间、每次爬跨持续时间、总爬跨持续时间、最后一次爬跨持续时间、射精持续时间等行为参数以及交配栓的重量均保持不变。表明雄兽具有恒定的交配投资模式，这种模式可能起因于该物种雄性之间激烈的精子竞争。

In fact, the total energies for the possible metastable alloy phases of A〓B and AB〓 types of six possible structures were calculated as a function of their lattice constant to find out if the respective metastable phases of A〓B or AB〓 types could be relatively stable in the selected systems. The calculation not only predicted the possible metastable states but also the lattice constant of the corresponding metastable alloy phases of either FCC or HCP structures.

对可能存在的A〓B或AB〓型亚稳合金相的六种结构，将总能量作为点阵常数的函数进行了计算，用以找到选定系统中相对稳定的A〓B或AB〓型亚稳合金相。

While the size of the inclusions is a constant, the LIEF will increase if the dielectric constant increased.

尺寸一定的杂质，其引起的场强增强也随介电常数的增大而逐渐增大。

Content: By learning this course, students should grasp the elementary solution of first order differential equation, the structure theory of linear differential equation or system of linear differential equations and the solution of constant coefficient differential equation or system of constant coefficient differential equations.

主要内容：通过对本课程学习，使学生掌握一阶微分方程的初等解法、线性微分方程的结构理论和常系数方程的解法，对微分方程初值问题的一些基础理论有一定的了解，对

The characteristics of constant linear velocity grinding method and constant angle velocity grinding method are analyzed. This thesis analyses the problem and influence to the machining precision of the two methods.

本文的主要研究工作有以下几个方面：研究了凸轮轴磨削加工的运动数学模型，在分析工件恒线速度和工件恒角速度磨削这二种主要凸轮轴磨削加工工艺的特点的基础上，提出一种新磨削加工工艺。

For the difficulty of estimating the invariant set and Lipschitz constant of nonlinear link during the design of the synchronization controller for the nonlinear systems, an idea of getting Lipschitz constant adaptively estimated is presented.

针对非线性系统同步控制设计中，估计系统不变集和非线性环节李普希茨常数所存在的困难，提出在李普希茨常数未知时对其进行自适应估计的思路，并在此基础上用李雅普洛夫方法得到两个混沌鲁里叶系统同步的控制器。

In this sense our mantra could be seen as " our one constant is constant change ".

在这层意义上，我们的培训可以说是"唯一不变的就是不断的在变化"。

Under constant temperature 20℃, the critical photoperiod of Papilio memnon was ED 13h 11mm:10h 49mm, under constant temperature 25℃, the critical photoperiod was ED 12h 49 mm:11h 11min.

在20℃恒温条件下，美凤蝶的临界光周期为LD 13h 11min：10h 49min；而在25℃恒温条件下，美凤蝶的临界光周期为LD 12h 49min：11h 11min。

These rules reflect some inherent feature of self and nonself, and they are the basic detection criterion of GECISM.

这些规则反映了"自我"和"非我"的内在特征，是GECISM进行"非我"检测的判据。

Until today, the media from China and the outside world still uses the term "Post 89". Regardless to whether it is for commercial gimmick or convenience, everybody still remember "Post 89", a term which carries a strong Cantonese accent.

时至今日，国内外艺术媒体还是在沿用&后八九&这个称谓，不管当初是为了商业噱头还是容易上口好记，反正大家现在是记住了&后八九&这个广东口音很重的词。