木材强度 meaning in English

hardness of wood

Strength grading of wood - part 5 : sawn hard wood
木材强度等级.第5部分:硬木锯材
Strength grading of wood - part 1 : coniferous sawn timber
木材强度分级.第1部分:针叶锯木木材
Strength classes of structural timber
木材强度等级66
Strength grading of wood - part 4 : certificate of suitability for machine grading
木材强度分级.第4部分:机械适用性等级合格证
Strength grading of wood - part 3 : grading machines for sawn timber , requirements and testing
木材强度分级.第3部分:锯木木材用分级机要求和试验

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