表面分级 meaning in Chinese

graded surface

Sawn timber - appearance grading of harwoods - part 1 : oak and beech
锯材.硬木的表面分级.第1部分:橡木和山毛榉
Sawn timber - appearance grading of softwoods - part 1 : european spruces , firs , pines , douglas firs and larches including amendment 1 : 2002 ; german version en 1611 - 1 : 1999 a1 : 2002
锯材.软木的表面分级.第1部分:欧洲云杉冷杉松树