强度等级 meaning in English
class of cube strength
strength grade
strength level
Examples
- Strength grading of wood - part 5 : sawn hard wood
木材强度等级.第5部分:硬木锯材 - Specification for visual strength grading of softwood
软木的外观强度等级规范 - Timber structures - strength classes ; german version en 338 : 2003
木材结构.强度等级 - Strength classes grades of prestressed tendon
预应力筋强度等级30 - Strength classes grades of steel barokok . org
普通钢筋强度等级30