本文介绍了一种只用一块NE555时基电路和少量分立元件，就能制作一个具有过压、欠压和断电延迟三种保护功能的全自动电冰箱保护器。
The author introduces the process of using NE555circuit and a few fittings to make a tutamen of automatic refrigerator with functions of over-pressure, deficient pressure, and delay.
在发送电子邮件后，因某时刻的网络流量过大或者断电，很可能会导致回复延迟。
There might be a delay in getting the reply after you sent your e-mail due to heavy network traffic or outages at some point of time.
应用推荐