对采用继电器控制系统进行控制的某实验室船舶燃油辅助锅炉，采用计数法进行可靠性评估，得出控制电路的平均无故障时间。
The reliability lab ship fuel oil donkey boiler controlled by relay control system is evaluated using counting method, and mean time to failure (MTTF) of the control circuit is educed.
作为辅助问题，首先考虑了单根纤维嵌在无限大基体的特殊情形，导出了纤维和基体中随时间变化的应力场。其次，应用平均场方法给出了任意时刻复合材料的总体响应。
As an auxiliary problem, the special case of a single fiber embedded into an infinite matrix is considered firstly, and the time dependent stress in the composite at any time is given.
实验对超声波辅助萃取技术与传统萃取技术进行了对比，得出超声辅助萃取制得的产品中丙酮不溶物含量平均高于传统萃取技术3.3%，萃取时间大大缩短。
The result showed that AI% of ultrasonic assistant extraction technique was higher than traditional extraction technique about 3.3% averagely, and extraction time was shortening obviously.
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