QINGDAO, Jan. 22 (Xinhua) -- China's first Type 054B frigate, the Luohe, was commissioned in the People's Liberation Army (PLA) Navy on Wednesday morning at a military port in Qingdao, east China's ...

HAIKOU, Jan. 25 (Xinhua) -- A commercial spacecraft launch site on China's southern island province of Hainan on Saturday started constructing its second phase that will include two launch pads ...

TB67S109A是使用PWM斩波器的两相双极步进电机驱动器。 内置解码器中的时钟。 采用BiCD工艺制造，额定值为50 V / 4.0A 欢迎加入EEWorld参考设计群，也许能碰到搞同一个设计的小伙伴，群聊设计经验和难点。 入群方式：微信搜索“helloeeworld”或者扫描二维码，备注 ...