2019年4月16日

2019.4 sigfox EMC

摘要：干扰源： Leakage Sensor 有-30dB的谐波 1在NPN 基级加100pF 电容从VCC到GND，一级级整改。阅读全文

posted @ 2019-04-16 18:19 keep1 阅读(169) 评论(0) 推荐(0)

L335 Nasa’s Twin Study Reveals Effects of Time Spent in Space on the Human Body

摘要： What exactly happens to a human body in space? Despite decades of astronauts going on space missions, this question remains hard to answer. The proble 阅读全文

posted @ 2019-04-16 08:13 keep1 阅读(225) 评论(0) 推荐(0)

2019年4月16日

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