A method for measuring and controlling the junction temperature of power transistor during succession operation life test is proposed.
为了在试验周期中了解晶体管的结温，提出一种在功率晶体管稳态工作寿命试验过程中结温的测量与控制方法。
Analyzing result of simulated experiment data shows that the test method can increase availably the accuracy of the transistor steady-state operation life test method.
模拟试验数据分析结果表明，该试验方法可以有效地提高晶体管稳态工作寿命试验方法的可信度。
According to the conditions of ageing test within endurance test, the expected operation life of a high-voltage shunt capacitor which operates under the standard condition is estimated.
根据耐久性试验中老化试验的条件，估算了一台合格的高压并联电容器在标准和技术条件规定的条件下运行时，其预期的使用寿命。
The actual operation test shows that the teeth have an equivalent work life of Korean products and remarkable economic benefits.
经生产实际考核后表明：其使用寿命与韩国产斗齿相当，具有显著的经济效益。
Long service life. Standing the test of ten thousands opening and closing operation.
启闭试验多达数万次，使用寿命长。
The activity of catalyst and operation conditions was investigated in fix-bed reactor. On these bases, the life test of the catalyst was carried out.
在固定床反应器中，考察了催化剂活性和工艺条件，在此基础上，进行了催化剂的寿命实验。
The activity of catalyst and operation conditions was investigated in fix-bed reactor. On these bases, the life test of the catalyst was carried out.
在固定床反应器中，考察了催化剂活性和工艺条件，在此基础上，进行了催化剂的寿命实验。
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