Cov cuab yeej no tau siv dav hauv kev lag luam xws li metallurgy, electro-mechanics thiab pwm, thiab lwm yam. Nws tuaj yeem txheeb xyuas thiab ntsuas tus nqi hardness ntawm cov qauv los yog cov txheej txheej tawv tawv, yog li nws yog ib qho cuab yeej tseem ceeb rau kev tsom xam thiab kev sim hauv kev siv tshuab. machining lossis ntsuas qhov siab precision.
