如圖所示是電阻式溫度計(jì),一般是利用金屬鉑做的,已知鉑絲的電阻隨溫度的變化情況,測出鉑絲的電阻就可以知道其溫度.這實(shí)際上是一個(gè)傳感器,它是將溫度這個(gè)熱學(xué)量轉(zhuǎn)化為         來進(jìn)行測量的.               

                                                                                             

                                                                                                                                    


電阻這個(gè)電學(xué)量

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