Maximum Operating Time的用法和样例：
例句
- This valve must be marked with a maximum set pressure not to exceed the marked working pressure on the water heater.
这种安全法必须标注不能超过的最大设置压力和热水器的最大工作压力。 - The value returned by this property represents the maximum size of working set memory used by the process since it started.
此属性返回的值表示自启动进程以来该进程使用的最大工作集内存大小。
