concrete grade的用法和样例：
例句
- This grade of wool can be sold at a lower price.
这种等级的羊毛可以以较低的价格卖出。 - Grade A milk is the best quality.
等级的牛奶品质最好。
concrete grade的相关资料：
临近单词
concrete bar
concrete
concrete with reticular polypropylene fibre
concrete-filled steel tubalar arch bridge
concrete culvert pipes for water-carrying
concrete-filled in rectangular steel tube
concrete-steel thickness equivalent factor
Concrete-filled-steel-tube arch bridge
Concrete-filled steel tubular short column
concrete perforated brick masonry structures
concrete-filled steel tubular core columns
concrete-filled rectangular tubular column
