1)pinch point节点温差
1.Discussed the selecting principle of pinch point and approach temperature point it is belong to the HRSG(heat recovery steam generator) of minitype combined gas-steam cycle.论述了小型燃气—蒸汽联合循环中余热锅炉节点温差和接近点温差的选取原则。
2.The paper discusses the selecting principle of pinch point and approach temperature point which belongs to the HRSG(heat recovery steam generator) of minitype combined gas-steam cycle.论述小型燃气-蒸汽联合循环中,余热锅炉节点温差和接近点温差的选取原则。
英文短句/例句
1.The paper discusses the selecting principle of pinch point and approach temperature point which belongs to the HRSG (heat recovery steam generator) of minitype combined gas-steam cycle.论述小型燃气-蒸汽联合循环中,余热锅炉节点温差和接近点温差的选取原则。
2.Influence of boiler operation in high temperature and large temperature difference on heating energy consumption锅炉高温大温差运行对供热节能的影响
3.The Rhythm in Deep Body Temperature and Dietary Cation-Anion Difference in Lactating Dairy Cows;体温日节律特性与奶牛日粮阴阳离子差调节
4.spot-type pneumatic rate-of-rise detector点型气动差温式火灾探测器
5.change the setting of a thermostat改变自动调温器的调节点
6.This electric iron features automatic temperature regulation.这种电熨斗的特点是能自动调节温度。
7.LPC2114 Application in Temperature and Humidity Measure NodeLPC2114在温湿度测量节点设计中的应用
8.Research of Greenhouse WSN node Test Platform on Harsh Environment温室WSN节点恶劣环境测试平台的研制
9.CAN Bus Temperature Detection Node Based on TMS320F2812基于TMS320F2812的CAN总线的温度检测节点设计
10.It is during these seasons that the differences in temperature between warm and cold masses of air are greatest.就在这些季节里,热气团与冷气团的温差最大。
11.Research on Temperature and Deformation Self-adjustment of Smart Concrete Structure;机敏混凝土结构的温差变形自调节研究
12.The Research of Temperature Error Correction Technology for PCMM;关节三坐标测量机温度误差修正技术研究
13.Seasonal and regional differences of air temperature changes in Inner Mongolia内蒙古地区气温变化的季节和区域差异
14.difference curve温差[差分,减差,差异]曲线
15.Selecting the Temperature Measurement Points of the NC Machine Tool and Constructing the Compensated Model of the Thermal Error;数控机床温度测点选取及热误差补偿建模
16.Improvement of Nine-point Difference Scheme for Two-dimension Three-temperature Heat Conduction Equations;二维三温热传导方程九点差分格式的改进
17.Statistic Analysis of Discrimination on Clouds in Shengyang Area with Depression of Dew Point利用温度露点差判别沈阳地区云体的统计分析
18.Variation trends of temperature in different seasons were similar to that of annual mean temperature except that in winter.不同季节平均气温的变化趋势与年平均气温变化趋势基本一致,仅冬季平均气温有差异。
相关短句/例句
Temperature drop of partial differential node差分节点温度降
3)Seasonal temperature季节温差
4)node slack节点时差
1.This paper presents three new properties of the node slack,and the slack theorem and characteristic path theorem are deduced.节点时差是CPM网络中一个重要的机动时间概念,在各种机动时间中最为直观,计算和应用起来最为简便。
5)node height difference节点高差
1.In the model,node height difference is combined with direction lane to express the real non-planar road networks and a way of its implementation is discussed.将平面路网数据模型与节点高差以及方向车道结合,提出一种基于非平面的路网数据模型,用以表达实际的非平面路网。
6)pinch temperature difference夹点温差
1.So a new method to determine the utility pinch temperature difference was proposed based on the principle of equal exergy loss,and a formula to calculate the utility pinch temperature difference was deduced.根据损失与温位之间的关系,以损失相等为准则,提出了公用工程夹点温差的确定方法,并得出了计算公用工程夹点温差的公式。
延伸阅读
电力网节点编号优化电力网节点编号优化network nodes order optimization d旧nl!wong Jled一anb旧nhoo youhuo电力网节点编号优化(network nodes order。Ptimization)用稀疏矩阵技术求解电力系统网络方程时,为了节省计算机内存和加快计算速度,按照一定规则编排电力网各个节点次序。 在电力系统计算中,网络方程通常采用导纳矩阵方程的形式,它的求解多采用高斯消去法和直接三角分解等(见网络方程求解方法)。导纳矩阵是零元素很多的稀硫矩阵,对它进行消元或三角分解后所得的三角矩阵,要增加一些称为注人元的非零元素。为节约计算机内存及避免对零元素的不必要运算,在计算机中一般只贮存三角矩阵中的非零元素.因此,三角矩阵中非零元素的个数,直接影响计算机内存的需要量及程序计算速度.导纳矩阵非零元素的分布直接影响消元或分解后三角矩阵非零元素的数目.而网络节点编号次序又与导纳矩阵非零元素的分布密切相关(见图1),因此,电力网节点编号优化是求解网络方程前的一项重要工作。┌─────┬────┬─────────┬────┐│节点.号.形│导纳矩阵│消元或分解后三角阵│注入元致│├─────┼────┼─────────┼────┤│么 │麟 │魏 │弓 ││21月 │ │ │ │├─────┼────┼─────────┼────┤│上 │瀚 │魏 │l │├─────┼────┼─────────┼────┤│。~主钩 │麟 │继 │(j │└─────┴────┴─────────┴────┘ 图1节点编号对注入元的影响 ·一非零元素;X一非零注入元紊 节点编号的最优化是寻求一种使注人元素数目最少的节点编号方案.对n个节点的电力网来说,其节点编号方案可以有川种,选最优的工作量将非常大.因此,在实际中往往采取一些简化的方法对节点编号进行优化,并不一定追求“最优”。 根据消元的计算公式或星形一三角形变换规则(见图2),每消去一个节点i,新增加的元素数为八一冬Ji(J‘一,)一及 ‘(1) l、、一一洲声图2消去节点1网络变化示意图式中J‘为在消去节点i时节点i的出线数;及为在消去节点i时与节点i有连线的各节点之间已有的连线数.常用的一些节点编号优化方案,大都根据式(1)或对其作一些简化得到的,主要可分以下三类。 (l)静态按最少出线数编号。对式(1)略去八项,视去为常数,即不考虑消去前面节点对节点i的出线数的影响,因此,也称静态优化法。该方法简单、快速、应用极为普遍。 (2)动态按最少出线数编号。对式(1)略去八项,但考虑Ji的变化,即考虑消去前面节点对节点i的出线数的影响,因此,也称半动态优化法。 (3)动态按增加出线数最少编号.对式(1)考虑及项和J‘的变化,即动态按增加出线数最少的原则编号,也称动态优化法。