constant load-rate tensile testing machine

例句：

1. 1.This constant load-rate tensile testing machine is used to test the strength of materials under various loads.
   这台恒定载荷率拉伸试验机用于测试材料在各种载荷下的性能。
2. 2. The constant load-rate tensile testing machine was developed to improve the accuracy of material testing.
   恒定载荷率拉伸试验机的开发旨在提高材料测试的准确性。
3. 3.The constant load-rate tensile testing machine is essential for the development of new materials and the improvement of existing ones.
   恒定载荷率拉伸试验机对于新材料的研发和现有材料的改进至关重要。