setting range of the characteristic quantity

例句：

1. 1.The engineer set a strict range for the temperature during testing.
   工程师为测试期间的温度设定了一个严格的范围。
2. 2. The scientist has established a precise range for the element's concentration.
   科学家已经确定了该元素浓度的精确范围。
3. 3. The team decided to set a lower range for the budget, ensuring that expenses were within their means.
   团队决定将预算设定在一个较低的范围内，以确保开支在他们的承受范围之内。