为确保您的烟雾探测器的安全运行,请执行以下操作:如果烟雾探测器正常工作,则红灯常亮。
Do the following to ensure the safe operation of your smoke detector: if your smoke detector is working properly, the red light should be on.
心头常亮红绿灯,安全行驶伴人生。
本文介绍了一种新改进的常亮式光电旋转粘度计。
In this article the author gives an account of his newly renovated slag viscosimeter.
应用推荐