只有一个半球式的球桶活动部件，动作无故障、可靠性高。
There is only a movable parts of hemisphere type, the action have no breakdown, dependable function.
在软件生存期中，有效地控制影响软件可靠性的各种因素，才能提高软件可靠性，实现软件产品的无故障运行。
In the software life cycle, validly controlling every kind of affect factor of software reliability can increase the software reliability and realize the software to run without fault.
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.
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