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GB/T 5094.4-2005
工业系统、装置与设备以及工业产品 结构原则与参照代号 第4部分:概念的说明
Industrial systems,installations and equipment and industrial products-Structuring principles and reference designations-Part 4:Discussion of concepts
GB/T 19773-2005
Specification of hydrogen purification system on pressure swing adsorption
GB/T 20327-2006
Shanks for turning and planing tools - Shapes and dimensions of the section
GB/T 20315-2006
Road construction and maintenance equipment - Road milling machinery - Terminology and commercial specifications
GB/T 12496.1-1999
Test methods of wooden activated carbon--Determination of apparent density





