| 1. | Test method for resistivity of precision resistance alloys
精密电阻合金电阻率测试方法 |
| 2. | Test method for electrical resistivity of soft magnetic alloys
软磁性合金电阻率测试方法 |
| 3. | Determining method of resistivity of copper , nickel and their alloys
铜镍及其合金电阻系数测定方法 |
| 4. | Standard test method for electrical resistivity of soft magnetic alloys
软磁性合金电阻率的标准试验方法 |
| 5. | Test method for temperature - resistance coefficient of precision resistance alloys
精密电阻合金电阻温度系数测试方法 |
| 6. | Test method for temperature - resistance constants of alloy wires for precision resistors
精密电阻器合金电阻丝耐温常数测试方法 |
| 7. | Standard test method for change of resistance with temperature of high resistance alloys for electrical heating
高电阻电热合金电阻随温度变化试验方法 |
| 8. | We select ni / cr alloy resistor as element together with ceramic embedding hearth ; select small flat - and - disc heat - even hubby ceramic sample holder , select ni / cr & ni / si thermoelectric couple ( type k ) as thermoscope with threads 0 . 5 mm in diameter which is installed in the middle of the holders symmetrically ; select aluminum silicate fire - retardant fiber as materials for heat preservation ; design some hardware , for example temperature controller & transporter , signal amplifier etc ; design controlling curve to heat stove ; and introduce the method of least squares nonlinear regression and subsection function to deal with data . in order to obtain the reasonable operation conditions and operation curve , we have also done many theory analysis and experiment discussions
通过理论和试验探讨，选用镍铬合金电阻丝作为加热元件，配以陶瓷质埋入式炉膛；选用陶瓷质小尺寸扁平?圆盘均热块体型样品支持器；选用0 . 5mm丝径镍铬?镍硅热电偶( k )作为测温元件；热电偶对称安置在样品支持器容器的中部；选用硅酸铝耐火纤维作保温材料；合理选用和设计了温度控制器、温度变送器、信号放大电路等硬件；采用升温曲线来控制炉膛供热过程；采用最小二乘法非线性回归与分段函数相结合的曲线模拟方法，进行图形处理。 |
| 9. | It is small power ones for defrosting in refrigerator . with the power range 100w 400w , it is made through putting the heating wire into the quartz tube and sealing the ends with rubber . the insulation performance and current leakage are better than the national standard after electrifying test in the water for a long time
此类加热器是冰箱化霜用小功率加热器。一般功率为100w 400w ，采用石英管中内绕合金电阻丝，两端用橡胶密封，产品经长期浸水通电工作试验，绝缘性能及漏电性能均优于国家标准要求。 |
