程林
程林
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北京林业大学研制了BJL系列低流量、高扬程林用消防泵,但在动力匹配方面的研究仍属空白,因此对BJL系列林用消防泵的动力匹配进行优化研究具有重要意义。
Beijing Forestry University developed the BJL series low-flow high-lift forest fire extinguishing pump . However , the research on the aspect of the dynamic matching is still blank .
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一直都是这样,程林说。
This is the way it has always been , Mr. Cheng said .