print contrast ratic 印字反衬比

remanence ratic 剩磁比

Form Ratic 形状率

fixed ratic pantograph 定比缩放仪

strength-to-weight ratic 比强度

cadmium ratic 镉比

fixed-ratic projection printer 固定倍率印像机

icc-watcr ratic 冰水比

tart ratic acid 酒石酸