查询词典 temperature coefficient

As the widely used resin matrix and composites, two kinds of epoxy matrix and its CF/epoxy composite and GF/composite have different mechanics property under different temperature. The result shows that the thermal property of the composite mainly depends on the matrix. If the matrix can resist high temperature, its composite can also have high strength under high temperature. resin matrix composite, thermal resistance, thermal deformation coefficient, severity retentivity ratio

多年来 ，人们一直致力于耐高温复合材料的研究工作，在耐高温树脂中能经受长期高温氧化的热固性树脂只有聚酰亚胺，本文主要研究三种树脂基复合材料在不同温度下的性能，即以聚酰亚胺为基体的复合材料以及两种环氧基复合材料在不同温度的性能。2 实验2 。1 材料选择研究中所用的增强材料选用英国考陶尔兹公司T30 0型碳纤维和进口UM - 40碳纤维以及南玻院S2高强玻璃纤维

Then,the influences of the argon pressure,substrate temperature,sputtering power,and the annealing temperature on the temperature coefficient of resistance for the sensor is studied.

结合工艺与测试实验，系统地分析了氩气压强、衬底温度、溅射功率、退火温度等工艺参数对电阻温度系数的影响规律。

Therefore, compensation for the drift should be given; the main reason for the temperature drift is theoretically analyzed which lies in the temperature coefficient of the coil resistance, and then a new compensation method utilizing non-inductive winding is presented and illustrated in an example; the experimental results show that the sensor obtains good compensation effects under 20-90℃, and the temperature stability reaches 0.7%.

电涡流传感器的温度漂移制约了其测试精度，因此需要给以温度补偿；理论分析出导致传感器温度漂移的主要原因在于线圈电阻的温度系数过大，因此提出采用无感线圈进行补偿的方法，并给出了设计实例；实验表明该方法在20~90℃度范围内补偿效果良好，温度稳定性达到0.7%；该方法简单、有效且成本低，可扩展应用于其他类型电涡流传感器。

A new making process of PTC small sensors is introduced and technological focal points in operations are detailed PTC small sensors (2 mm×2 mm×0 3 mm)with Curie temperature 120 ℃,resistivity at room temperature about 100 ohm·cm, temperature coefficient of resistance above 15%℃-1 ,rate of rise of resistivity ρ max /ρ min above 10 3 and time constant below 2 seconds have been made by use of new technology of isohydraulic formation, chip cut and scratch.

介绍了一种新的微型PTC元件的制造工艺，并对各个工序的技术重点做了详细阐述。作者采用等静压成型和切片、划片新工艺制成2mm×2mm×0.3mm微型PTC元件，其居里温度为120℃，室温电阻率为100Ω·cm，升阻比ρmax／ρmin大于103，电阻温度系数α≥15％℃－1，时间常数小于2s。

This article introduces a negative temperature coefficient by NTC thermistor temperature sensor to the temperature protection device.

本论文介绍一种采用NTC负温度系数热敏电阻做温度传感器的温度保护装置。

To assess the thermal contribution from oxidation reaction, the standard formation enthalpes of all reactants and products were used to calculate the oxidation enthalpies. It could be found that all oxidation reactions were exothermic. And oxidation played a more important role during the toluene trinitration at high temperature, because the reaction temperature of toluene trinitration is the higher than mononitration and dinitration, and the temperature coefficient of oxidation is higher than that of trinitration too.

为了考察不同阶段氧化副反应对反应放热的贡献，用反应物和产物的标准生成焓推得氧化反应的理论反应热，计算结果表明，各段硝化的氧化副反应均为放热反应，其中三段硝化反应由于反应温度最高，氧化反应的温度系数比硝化反应高，故氧化副反应对三段硝化影响最大。

A process for manufacturing seamless flux-cored welding wires 0.8 to 4 mm in diameter with excellent cracking resistance and primer proof quality and containing very little diffusible hydrogen suited for the welding of high-tensile steels and steel structures subjected to large restraining forces by dehydrogenating by high-temperature heating comprises the steps of heating a straight wire 8-15 mm in diameter by direct electric heating through a first and a second pair of roll electrodes spaced 2 to 5 m apart and a ring transformer disposed therebetween to a temperature between 620 and 1100 degrees Centigrade, cooling the heated wire to a temperature not higher than 500 degrees Centigrade with a coefficient of heat transfer not higher than 250 kcal/m2 h degree Centigrade, and drawing to the desired diameter.

一种用来制造直径0.8至4mm的、具有优异的抗裂缝力和底层涂料防护质量并含有非常少的扩散氢的、适合于焊接高强度钢和承受大约束力的钢结构的无缝药芯焊丝，通过用高温加热进行脱氢处理来制造的工艺包括步骤：通过经布置成相隔2至5m的第一和第二对辊电极并经布置在它们之间的环心变压器的直接电加热，把直径8至15mm的直焊丝加热到620与1100℃之间的温度；用不高于250kcal／m2h℃的传热系数把已加热焊丝冷却到不高于500℃；以及拉伸到想要的直径。

It is pointed out that due to the difference of the temperature expand coefficient of aluminum alloy gear case and steel bolt, when the temperature of the gear case increased,additional temperature-difference load is generated,which is the ultimate reason of the bolt failure.

指出由于铝合金齿轮箱和钢制螺栓的热膨胀系数不同，在齿轮箱温度升高后产生附加的温差载荷，此温差载荷是螺栓失效的根本原因，由此依据相关公式提出了改进措施。

Default 0 Unit - Symbol tWB Equation (3.31) Function "Soil temperature response, double exponential" TempCoefC Temperature coefficient governing the trigging temperature.

默认值 0.8 单位-符号 tWA 方程式(3.31)作用&土壤温度响应，二重指数& TempCoefB 温度响应函数的系数，仅适用于温度响应为二重指数的情况。

Environmental factors also affect degradation rate, which will increase as temperature and moisture increased , Temperature effect coefficient varies from 1.08 to 1.42, which is not in accordance with Van't Hoff rule, and it is proved that the effect of temperature on degradative rate in soil is less than that in water.

外界环境条件对咪唑烟酸的降解影响也较大，温度越高，湿度越大，则咪唑烟酸的降解越快，Q值的范围在1.08～1.42之间，与范特荷夫规则不吻合，说明温度对土壤中咪唑烟酸的降解速度影响明显低于对水解的影响。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。