La5C3002什么叫电阻温度系数?导体电阻与温度有什么关系?
["\u7b54\uff1a\u5f53\u6e29\u5ea6\u6bcf\u5347\u9ad81\u2103\u65f6\uff0c\u5bfc\u4f53\u7535\u963b\u7684\u589e\u52a0\u503c\u4e0e\u539f\u6765\u7535\u963b\u7684\u6bd4\u503c\uff0c\u53eb\u505a\u7535\u963b\u6e29\u5ea6\u7cfb\u6570\uff0c\u5b83\u7684\u5355\u4f4d\u662f1\/\u2103\uff0c\u5176\u8ba1\u7b97\u516c\u5f0f\u4e3aa=(R2-R1)\/[R1(t2-t1)]\u5f0f\u4e2dR1\u2014\u6e29\u5ea6\u4e3atL\u65f6\u7684\u7535\u963b\u503c\uff0c\u03a9\uff1b\uff0eR2\u2014\u6e29\u5ea6\u4e3at2\u65f6\u7684\u7535\u963b\u503c\uff0c\u03a9\u3002"]