冲击韧度
参考答案：
试件在摆锤冲击试验中，试件缺口处单位面积上，所消耗的冲击功。
看图填词。
1. This is a .
2. This is a .
3. Here's a .
4. Here's a .
5. It's degrees.
I my homework at school.[ ]
A.don't
B.don't do
C.not do
D.do not
This is a .
This is a .
Here's a .
Here's a .
It's degrees.