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1)  supply and return water temperature curve
调温曲线
1.
The paper discusses the determination of supply and return water temperature curve and three operation ways of central heat-supply network.
探讨了集中供热管网的调温曲线的确定和3种运行方式。
2)  regulating line(or curve) for water-supply temperature
温度调节直(曲)线
3)  temperature adjustment curve
温度调节曲线
4)  isothermal curve
等温曲线
5)  Expansion-with-temperature curve
随温曲线
6)  viscosity-temperature curve
粘温曲线
1.
A general equation for calculating crude oil viscosity is established by using statistic theory according to 44 viscosity-temperature curves from 22 typical heavy oil blocks of 6 oil fields in Liaohe oil province,hence to calculate the viscosity of degassed crude at arbitrary temperature.
根据辽河油区6个油田22个典型稠油区块44条粘温曲线,运用统计学原理,建立了计算原油粘度通用方程,由此计算各种稠油在任一温度下的脱气原油粘度。
2.
The physical property changes of Zhongshanchuan crude oil is tested after BEM-W PPD is added,optimum concentration and optimum tempreture is given for Zhongshanchuan crude oil for BEM-W,and then rheological curve and viscosity-temperature curve is drawed.
测试了BEM-W降凝剂对中山川原油的物理性质的改变,给出中山川原油添加BEM-W降凝剂的最佳浓度和最佳温度,绘制了相应粘温曲线和流变曲线。
补充资料:正温度系数热敏陶瓷阻-温特性曲线
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性质:描述正温度系数热敏陶瓷电阻率与温度关系的曲线。钛酸钡基PTC热敏陶瓷阻-温特性曲线。电阻率随着温度的升高,先是降低,当达到某一值Tmin时,曲线出现极值,经过极值后电阻率随温度升高而急剧上升,此时对应的温度Tb称为开关温度。电阻率随温度上升达到最大值时所对应的温度为Tm。经过Tm后,阻温特性曲线发生弯曲,电阻率开始逐步降低,此时对应的温度为Tp。温度处于Tb至Tm之间时,热敏陶瓷呈现正温度系数(PTC)特性。其电阻温度系数αT= ,式中Rb,Rp为Tb,Tp温度下的相 应零功率电阻值。αT大于10%/℃,为开关型热敏陶瓷电阻器。αT小于10%/℃,为缓变型热敏陶瓷电阻器。

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