Khoom Piav Qhia
Qhov chaw nruab nrab no yog cov txheej txheem siv hluav taws xob tsim kom ntseeg tau tias yog linear muab tso rau thiab tswj tau cov khoom hauv kev lag luam. Nws muaj cov hlau tawv tawv (tawm iav), uas muaj nyob hauv cov iav, hloov lub zog tig mus rau hauv qhov tseeb, rov ua dua. Qhov no yog qhov tseem ceeb rau cov ntawv thov uas xav tau kev sib zog sib zog, qhov muaj peev xwm thiab muaj peev xwm nqa tau cov kab ncaj nraim.
Cim npe nrov: Caij nplooj ntoos hlav bracket, Tuam Tshoj Bracket Springs cov chaw muag khoom, Hoobkas
