Questioning the Theory of Electronic File Life Cycle

Academic Discussion Zhejiang Archives 2000.3 Electronic Documents Life Cycle Theory Questioned □ Yu Lijuan of China ’s College of Case Studies of the Chinese People ’s University does not now have any doubts about principles, but now he is always skeptical; he is not ob

Phosphor selection and solution in LED package

White LED is known as the fourth generation of green lighting source because of its high efficiency, energy saving, long life, no pollution and high reliability. With the steady improvement of LED luminous efficiency and the continuous decline of prices, the current LED li

YAMAHA Yamaha PDX-13 desktop iphone audio

Always wanted to start with a desktop speaker, a few days ago discovered the goods in Amazon, was attracted by the appearance and logo, think about putting the bed to put a bedtime lullaby Ye Hao.

580 ocean to start, looks like a price increase, first on the

Suppress RFI and EMI with twisted pair and low pass filters

introduction

“The Twist” refers to the twisted pair and Alexander Graham Bell applied for the patent in 1881. This technology has been used today because it provides a lot of convenience. In addition, with the increasing processing

How to survive in the "barbaric" LED lighting market?

"At present, LED lighting is in a barbaric era." This is a sigh of Hao Jun, the director of Wanrun Technology. He also said that the LED lighting market is in the current situation. There is no threshold in the industry, there are many brand