फ्री वीडियो देखें How to Make a Rotary Switch: How It Works

Name: How to Make a Rotary Switch: How It Works
Uploaded: 2017-04-25T23:18:10Z
Duration: 18 s
Description: How to Make a Rotary Switch: How It Works.

(1.74 MB) 25 Apr 2017 को जोड़ा गया 136 बार खेला गया विज्ञान Tutorial How it works