rate of contraction

例句：

1. 1. The rateof contraction is a crucial factor indetermining the material's strength.
   收缩率是决定材料强度的关键因素。
2. 2. The rateof contraction slowed down as thetemperature increased.
   随着温度的升高，收缩率减慢了。
3. 3. The rate of contraction can vary depending on the type ofmaterial and its properties.
   收缩率取决于材料的类型及其性质而有所不同。