定时器控制泵的运转时间，较便宜且操作简单。
Timer control pump operation time, less expensive and easy to operate.
用了数位显时间定时控制，操作方便。
Show time to control regularly after adopting several, easy to operate.
讨论一类在特定时间消费的物品的销售控制策略。
The problem of sale control strategy for products consumed in a specified time is studied.
定时控制开关，避免夜间非工作时间加热，与普通开水器相比可节能30%～50%。 。
Avoid night non-work time heating, compared with common water boiler can energy saving 30% ~ 50%.
定时控制开关，避免夜间非工作时间加热，与普通开水器相比可节能30%～50%。 。
Avoid night non-work time heating, compared with common water boiler can energy saving 30% ~ 50%.
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