查询词典 instability constant

The theory and application is explained in this paper. Software XMGREDIT5 matching ELCIRC is used to generate unstructured grid, and is considered fit for ocean but rivers. Tidal current is simulated and validated well, and sensitivity of current structure to bathymetry is visible. Affection of wind is qualitatively analyzed here. At the same time the model is improved on as required, like the tidal open boundary which could choose not only long period harmonic constant but also short period harmonic constant and tidal level, and multi-point results and flow field data could be exported effectively with binary results.

本文介绍了ELCIRC的理论及使用；基于其在Linux平台下的软件XMGREDIT5生成全三角形网格并评价其特性，认为XMGREDIT5较适合大范围海域而不适用于河道；应用ELCIRC模型计算了长江口的潮流场并进行验证，结果与实测资料吻合良好，且能较好地模拟出地形变化对水流结构的影响；文中对于风场的影响作了定性分析，同时根据实际需要对模型作了改进，如将仅支持长期资料调和常数的开边界条件改为可选择的短期调和常数边界和潮位边界，使二进制格式结果文件数据输出可以处理多点数据及流场等等。

This generator adopts such two excitation systems as harmonic excitation self-excitation constant and automation volt controlling excitation constant volt,it owns many advantages as the best dynamic properties、simply operating and durable.

发电机采用谐波励磁自励恒压和自动电压控制励磁恒压两种励磁系统，具有最佳的动态特性，使用方便可靠，经久耐用。

HENT Science ＆Technology Development Co.,Ltd is a new high-tech enterprise in the hardware industrial base of Heshan City, Guangdong Province, which is invested directly by Nanan City of Fujian Province Special Industrial Ceramic Co.,Ltd,covers 100,000square metres, the area of the building is over 50,000 square metres. We are specialized in research, development and production of the core parts of faucets---the series of accurate ceramic core valves and constant temperature and balanced pressure .We are the appointed producer of sanitary accessories by the State Ministry of Construction. and the main draftsenterprise of the national industry standard for the constant temperature and balanced pressure water faucets production. Our registered trademark are "HENT"、"TETAO" and "TUOPU".

汉特科技开发有限公司是福建南安市特种工业陶瓷有限公司直接投资广东鹤山市五金产业基地的新型高科技企业，占地10万平方米，建筑面积5万多平方米，专业研发生产卫浴龙头核心部件---精密陶瓷阀芯系列产品及恒温恒压系列产品，是一家建设部卫生洁具配件生产的定点管理企业，是恒温恒压水嘴国家行业标准指定的主要起草单位，企业产品注册商标：汉特"HENT"、特陶"TETAO"、拓普"TUOPU"

As the cam profile with constant-velocity-constant-acceleration ramp feature and with continuous higher derivative lift feature is widely adopted in the advanced high-speed internal combustion engines, the cam ramp profile is fitted with a reasonable function and the cam-lift profile is fitted with a polynomial function.

考虑到高速内燃机的凸轮大多采用具有等加速-等速特征的缓冲段和高阶导数连续特征的工作段型式，用等加速-等速函数拟合缓冲段实测升程数据，用整体式高次多项式函数拟合工作段实测升程数据。

First of all,we have given some of the basic concepts of differential equations, described the constant coefficient linear ordinary differential equation solution, for a class of second-order variable coefficient linear ordinary differential equation initial value problem, an approximate solution, the method is first unknown function of a definition for N sub-interval, and then in between each district within a constant coefficient ordinary differential equations similar to the replacement, the solution has been the problem as similar to the original analytical solution, and then gives a detailed second-order change order coefficient of linear homogeneous ordinary differential equation solution examples, the examples of the approximate method proposed in this paper is valid.

首先给出了微分方程的一些基本概念，讲述了常系数线性常微分方程的解法，针对一类二阶变系数线性常微分方程初值问题，提出了一个近似解法，本方法是先对未知函数的一个定义区间作N等分，然后在每一个小区间内用一个常系数常微分方程近似替换，所得到的解作为原问题的近似解析解，随后详细给出了一个求二阶变系数齐次线性常微分方程的解的实例，该实例说明本文提出的近似方法是有效的。

On the basis of ripe operating experience,fuzzy control theory was used to design the fuzzy controller to constant horse-power, and the constant horse-power control of spring cone crusher was realized.

依据成熟的操作经验，运用模糊控制理论设计完成弹簧圆锥破碎机恒功率模糊控制器，实现了弹簧圆锥破碎机的恒功率控制。

The principle of the hot-wire air flow sensor is introduced here,the design for measurement circuit at constant current and constant temperature are expounded,the flow equations have been derived out.

热线式空气流量计是测量空气流量的一种重要工具，它起源于20世纪初，一直广泛用于流体速度测量，并且在20世纪60年代以后曾一度是流体测速领域中的主要技术之一。

To study the characteristics of Micro hotplate based vaccum sensor at constant tern perature working mode, the influences of working temperature and dimensions on the working characteristics of MHP based thermal vacuum sensor at constant temperature was analyzed based on the thermal analysis of MHP.

研究了微热板的传热特性，从理论上分析了恒温模式下工作温度和结构尺寸对微热板电阻真空传感器工作特性的影响。

The flow control unit includes a plurality of mass flow controllers which are divided into a plurality of groups for the gas distribution of each channel; the humidifying unit is composed of humidifiers and shared constant-temperature oil bath, and the humidifiers are divided into a plurality of groups to humidify each channel; the signal acquisition unit is composed of a stress sensor, a temperature sensor, a humidity sensor and a data acquisition system; the temperature control unit heats the mono-cells or the electric piles to be tested of each channel through a plurality of ways, into which an external-cycle waterway is divided by a constant-temperature water tank; and the discharging unit adopts host plus module type electronic load to meet various test requirements through changing the combination of the modules.

流量控制单元含若干质量流量控制器分多组为每个通道配气；增湿单元由增湿器和共用的恒温油浴构成，增湿器分多组为每个通道增湿；信号采集单元由压力、温度、湿度传感器及数据采集系统组成；温控单元由恒温水槽通过外循环水路分多路给每个通道的测试单电池或电堆加热；放电单元采用主机+模块式电子负载，通过改变模块间的组合来达到不同的测试要求。

The hyperfine coupling constant A and electric quadrupole coupling constant B are approximate in agreement with values by other worker.

本文还详细介绍了高分辨饱和光谱基本原理及在实验中所涉及的一些技术问题。

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。