The experimental results indicated that the model reflected the real reaction of the detection system in a certain intensity of magnetic field and magnetization time 实验结果表明在一定的磁场强度和作用时间内,模型反映了体系的真实行为。
3 ) some low graphitization degree samples " magnetoresistance is 0 when measure temperature is enough high . 3 ) in low intensity of magnetic field , the curve of / 0 - b is parabola 建议对碳/碳复合材料磁电阻的测量参数是:温度区间为70 100k ;磁场强度选择区间为1 1 . 2t 。
Four kinds of c / c composites with different preparation techniques were graphitized at 2400 - 2880 . the relations between magneto - resistance and orientation ( the angle between surface of samples and magnetic field ) , measure temperature , the intensity of magnetic field ( b ) were studied for each sample . the micro - structure and x - ray diffraction pattem were investigated too 本论文在对制备工艺不同的四种碳/碳复合材料样品进行2400 2880的石墨化处理后,应用ppms ( physicalpropertymeasurementsystem )研究了测试位向(试样某特定面和磁场方向夹角) 、测量温度以及外加磁强对材料磁电阻特性的影响,同时研究了各试样的微观结构和x射线衍射谱图。
This paper mainly researchs the electromagnetic radiation in chongqing . ten stations and fourteen transmission lines are sampled to scale the intensity of electrical field and the intensity of magnetic field . the values measured practically are compared to the value calculated theoretically 为此,本文作者在国内外现有工作的基础上,通过对重庆市10个变电站和14回输电线路进行有关研究,将测量值与理论计算值进行了比较,论证了重庆地区的电气设备对环境的影响状况。