grade of lumber meaning in English
成材等级
Examples
- 1 common grade of lumber - grades at least 66 . 66 % clear in cuttings 3 " wide by 3 ' long or 4 " wide by 4 ' long minimum . minimum 3 " wide by 4 ' long
符合美国硬木协会要求的板材等级：普通1级，至少66 。 66 %表面干净， 3英寸宽以上， 3英尺长以上；或4英寸宽以上， 4英尺长以上。最小尺寸是3英寸宽和4英尺长。