问题
问答题 简答题
什么叫应力？
答案
参考答案：
物体受外力作用时，在单位截面积上出现的内力叫应力。
搜题请搜索小程序“爱下问搜题”
什么叫应力？
参考答案：
物体受外力作用时，在单位截面积上出现的内力叫应力。
| 用方框中所给单词或短语的适当形式填空。 | |
| |
| 1. The bus is_______.We don't have to wait for the next one. 2. I rang my parents to tell them I had arrived________. 3. In our school we have many________activities. 4. The new type of car is very________.I can afford to buy it. 5. This summer, all of us will have a quiet________holiday. |