结论结扎橡皮圈在不同负载下均存在应力松弛的现象，应力松弛率相同。
Conclusion the rate of stress relaxation of the rubber ring ligatures on different loads are the same.
此法成功地用于生产中，从而解决了预应力钢丝1000小时松弛率检验的难题。
Thereby difficult problem that we test relaxation ratio of prestressed concrete steel wire for 1000 hours has been solved.
对预应力钢绞线选用不同的初始应力，得到不同的松弛率，从而找出初始应力与松弛率的关系。
To select different initiative stress can get different relaxation rate of prestressed steel strand and find out the relation between initiative stress and relaxation rate.
用于测定氨纶丝断裂强度、断裂伸长率、定伸长负荷、应力松弛，塑性变形等性能指标。
Used for testing indexes of polyurethane monofilament, such as breaking tenacity, elongation at break, load at specified elongation, relaxation of stress, plastic deformation, etc.
此法成功地用于生产中，从而解决了预应力钢丝1000小时松弛率检验的难题。
Now the method is successfully used in the production. Thereby difficult problem that we test relaxation ratio of prestressed concrete steel wire for 1000 hours has been solved.
此法成功地用于生产中，从而解决了预应力钢丝1000小时松弛率检验的难题。
Now the method is successfully used in the production. Thereby difficult problem that we test relaxation ratio of prestressed concrete steel wire for 1000 hours has been solved.
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