Electrical power transmission networks are protected and controlled by medium and high-voltage circuit breakers. Breakers are meant to make and break the flow of electrical currents in transmission ...

This means of interruption soon became inadequate and special devices called circuit breakers had to be developed. The basic problem has been to control and quench or extinguish the high power arc, ...

Compiled by the Official Charts Company, the UK's biggest independently-released albums of the week by an artist who has not yet reached the Top 40, based on sales of digital bundles, CDs, vinyl ...

As with many inventions, two people had the idea for an integrated circuit at almost the same time. Transistors had become commonplace in everything from radios to phones to computers, and now ...

北京商报讯（记者 王寅浩）10月22日，甘李药业发布2024年三季度业绩报告。公告显示，2024年前三季度甘李药业实现营业收入22.45亿元，同比增长17.81% ...