Joint Design 12
Cov no tsuas yog qee qhov muaj peev xwm ua kom pom nrog cov duab sib koom ua ke. Muaj ib tug xov tooj ntawm lwm yam
"lub neej tiag tiag" yam, uas tej zaum yuav tsis tuaj yeem kwv yees, uas tso cai rau lub caij nplooj ntoos hlav lub zog poob rau hauv kev sib koom ua ke. Cov xwm txheej no suav nrog, tab sis tsis txwv rau cov ntsiab lus sib txawv ntawm kev thauj khoom, nkag mus, kev thauj khoom sab nraud, kev ntxhov siab (hauv qee qhov kev so ntawm 10 feem pua rau 20 feem pua yuav ua tau ntau), qhov kub, qhov sib txawv thermal expansion, thiab kev co.
