Friday, December 14, 2018
Home photo transistor L14G2 L14G2_NPN_photo_transistor-300x300

L14G2_NPN_photo_transistor-300×300

vacuum brake equipments

Vacuum Brake

VACUUM BRAKE The vacuum brake was, for many years, used in place of the air brake as the standard, fail-safe, train brake on railways in...
EFFECTS OF WELDING HEAT

Forge Welding

PATTERN MATERIAL METAL

PATTERN MATERIAL METAL

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