本机主要用于测试材料在各种温度环境下的持久蠕变、应力松弛性能。测量材料在恒定温度条件下的位移与外力作用的蠕变、应力松弛关系。 This machine is primarily used for testing the long-term creep and stress relaxation properties of materials in various temperature environments. It measures the creep and stress relaxation relationships of materials under constant temperature conditions with displacement and external force.