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液压气动方面现行的国家标准共有20项,即:GB 786-76 液压及气动图形符号GB 2346-80 液压气动系统及元件——公称压力系列GB 2347-80 液压泵及马达公称排量系列
Hydraulic and pneumatic aspects of the existing national standards a total of 20, namely: GB 786-76 hydraulic and pneumatic graphical symbols GB 2346-80 hydraulic pneumatic systems and components - nominal pressure series GB 2347-80 hydraulic pump and motor nominal displacement series