问题
名词解释
蠕变与松弛
答案
参考答案：
蠕变：指一定温度下，纺织材料在一恒定拉伸外力作用下，其变形随应力时间的延长而逐渐增加的现象。
应力松弛：在一定温度下，纺织材料在拉伸变形恒定条件下，应力随时间的延长而逐渐减小的现象，称为应力松弛。
搜题请搜索小程序“爱下问搜题”
蠕变与松弛
参考答案：
蠕变：指一定温度下，纺织材料在一恒定拉伸外力作用下，其变形随应力时间的延长而逐渐增加的现象。
应力松弛：在一定温度下，纺织材料在拉伸变形恒定条件下，应力随时间的延长而逐渐减小的现象，称为应力松弛。
| 完型填空。 | ||||
| I think the best place to go on Sunday is the zoo. When you are __1__, you can go there with your family. __2__ the zoo, there are many animals: elephants, deer, __3__, rabbits and other animals. Elephants are the __4__ animals on land. I __ 5__ there is a baby elephant in our zoo. So I want to __6__at it. Yu Xuan wants to go with me. She says, " __7__we go there together?" "Sure!" I say. " We can __8__ a good time there. But let's __9__ there at half past four. I have __10__ homework to do." | ||||
|