提交型式核准有关技术资料。
分析了国内外现有双向功能泵组及泵站的结构型式，进行了技术经济比较。
There are many types of structures of double acting pumps and pumping stations which have different technique and economic characteristics.
对非重复充装瓶阀的技术要求和型式试验采用的国家标准和欧洲标准进行了比较分析。
This paper analyses the specification and type testing of cylinder valves for non-refillable cylinders at home and abroad.
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