Hais txog peb

Kev ntseeg siab Machinery yog cov chaw tsim khoom lag luam hais txog txhua yam kev ntsuas qhov ntsuas siab hauv Suav teb.Peb kuj muab lwm qhov ntsuas ntsuas ntsuas qhov ntsuas, xws li: bimetallic caij nplooj ntoos hlav, hairspring, pointer thiab bourdon raj.
Cov khoom no yog wildly siv rau txhua hom kev ntsuas siab thiab ntsuas kub.
Peb tuaj yeem tsim cov kev ntsuas siab no thiab lwm yam khoom seem los ntawm cov neeg siv khoom xav tau lossis kos duab, lossis peb tuaj yeem pom zoo peb cov khoom lag luam zoo ib yam lossis cov qauv zoo sib xws rau cov neeg siv khoom.Yog li koj tuaj yeem tau txais cov khoom sai ntawm peb.