To design and manufacture a constant-source with adjustable amplitude value and the test system, and to realize the examination of zener diode voltage drift parameter, is very important.
设计制作出一个幅值可调的恒流源及其测试系统，实现稳压二极管电压漂移参数的检测，至关重要。
Optimum design of temperature examination makes the system more utility, convenient and reliable. The optimum design has some reference value in usage of the whole system of temperature control.
对温度检测环节做了进一步的优化设计，使该系统更具有实用、易行、可靠等特点，在实际应用中具有一定参考价值。
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