Most of the traditional industries are the heyday of the development of the machine industry after the industrial revolu...

Mainly refers to the use of household and similar places in a variety of electrical and electronic appliances. Also know...

162/5000Jiāotōng yùnshū shì jīngjì fāzhǎn de jīběn xūyào hé xiānjué tiáojiàn, xiàndài shèhuì de shēngcún jīchǔ hé wénmín...

Green lighting is the United States National Environmental Protection Agency in the early 90s put forward the concept of...