2. Static load thiab range static load thiab ntau yam, txwv deformation yuav tsum txwv deformation yuav tsum tau;
3. Lub xeev load (paub siv), siab tshaj plaws dynamic load (kev ua hauj lwm hnyav);
4. Cov kev cai sib tsoo, kev txwv thiab kev thauj khoom, kev txwv tsis pub muaj kev sib tsoo, kev xav tau thiab xav tau kev sib dhos;
5. Txoj kev Mounting (nrog rau qhov loj me, hom, kev taw qhia thiab kev tiv thaiv kev sib hloov)
6. Mounting txoj hauj lwm (qhov chaw nkag siab, insensitive);