This might include the event hooks, the event handler, the error methods, and the timer methods.
这可能包括事件关联函数、事件处理函数、错误方法和计时器方法。
2
Event delay, in milliseconds. If this value is not in the range of the minimum and maximum event delays supported by the timer, the function returns an error.
事件延迟，毫秒。如果这个值不在定时器支持的最小和最大延时之间的话，函数将返回一个错误。
3
This paper analysised factors of system error by gas viscous resistance and photoelectric timer, and suggested to amend it.