For the present, the design for roller leveler of medium plate was mainly based on the analogical approach in China, and the essence of roller leveler is lack of research.
目前国内对于中厚板辊式矫直机的设计，主要还是采用类比设计的方法，对其技术的精髓尚缺乏研究。
In practicing of blasting , Engineer of blasting design the scheme and parameter of blasting by the personal experience , project analogy and testing on analogical spot at present.
目前，在爆破工程实践中，爆破工程技术人员通常凭借个人经验、工程类比或者在相似地段进行爆破试验，来决定爆破开挖方案，进行爆破孔网参数设计。
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