积累了大量的实践经验。
通过分析总结加深理论认识，积累了生产实践经验，防止此类铸坯缺陷重复发生。
The process theory understanding and practice experience accumulating is necessary to prevent the same problem.
同时我们也积累了大量的实践经验。
Meanwhile, it has also accumulated a great deal of working experience.
长期以来，企业在生产技术方面积累了丰富的实践经验。
For a long time, enterprises in the production technology accumulated rich experience.
长期以来，企业在生产技术方面积累了丰富的实践经验。
For a long time, enterprises in the production technology accumulated rich experience.
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