gear box ratio

axial compression ratio and slenderness ratio

continuous box girder with one box double cells

single box double room box girder

(DR)damage ratio

(the ratio of )volumetric strain

(the ratio of)shear strain

~(99m)Tc and ~(99)Mo intensity ratio

a ratio of height to thick

A TP ratio

AA utilize ratio

abnormal ratio

abnormality ratio

abortion ratio

aboundance ratio

Abrasion Degree Growth Ratio

Abrasion Ratio

abrasive ratio

absolute advance ratio

Absolute Concentration Ratio