Omaha.com28 天
The Public Pulse: Does Omaha need a giant statue to be recognized?
Here's how you can submit letters to the Public Pulse opinion section. *Editor’s note: The Omaha World-Herald is running an occasional series of Midlands Voices and Public Pulse letters focused ...
仪表网9 天
小风扇高低温寿命试验装置 SH9853 Mini-fan high and low temperature life test device
广州信禾检测的小风扇高低温寿命试验装置依据的要求而设计。实现对小风扇在高温和低温环境下进行寿命测试。 1、供电电源：AC220V，50Hz。 2、具有掉电保存功能。 3、试品试验电压：AC 10～280V变频稳压电源两路（用户自备，一路供风扇。另一路供双金属传感器 ...