Through production practice, the maturer experience in operation of large electric furnace is achieved.
经过生产实践，在大型电炉操作运行方面取得了较为成熟的经验。
The remarkable exploration improvement had been obtained through method study and production practice.
通过技术方法研究和科研生产实践，地震勘探效果显著。
The remarkable exploration improvement had been obtained through method study and production practice.
通过技术方法研究和科研生产实践，地震勘探效果显著。
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