亚洲黄色在线看网站,青青三级片在线观看,免费看无码特级毛片,帅帅的GAY吊大且硬喷浓精,免费国产美女一级八A,国语自产偷拍精品视频偷拍

Class Has Started.

20^th?August at 4:00 p.m.

Mr. Yu Xiaochen, engineer of R&D Department of DDTOP Technology Center, will share the course of “Electromagnetic Compatibility of Instruments”.

This?course is divided into two parts including:

1、What is electromagnetic compatibility?

2、Application of electromagnetic compatibility in products.

Welcome to the live classroom. Mobile users can access the live classroom by identifying the QR code in the picture above.

The following link can be copied by computer users to watch the live webcast.

https://ke.qq.com/webcourse/index.html#cid=2672944&term_id=102779199&lite=1&from=800021724

Please forward to your friends so that everyone can share and enjoy the knowledge.