The results indicated that after machining the stress is re arranged and the residual stress decreases; the effect of thermal cycle stress relief treatment is little.
结果表明：加工以后使应力重新分布和使残余应力降低或均匀化，冷热循环去应力处理效果很小。
Sludge water content has been detected as the index to indicate the effect of ultrasonic and composite flocculants on the residual activated sludge in petrochemical water treatment plants.
以污泥含水率为考察指标，研究了超声波-复合絮凝剂对石化厂剩余污泥脱水效果的影响。
Through measuring and comparing of the residual stresses be fore and after treatment, it is result in raising the quality and effect of treatment and reducing the environment pollution.
通过热处理前后残余应力测量结果的对比可以看出，使用该设备不仅提高了热处理质量和工效，而且减少了环境污染。
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