NF P18-411-中文
混凝土硬材料弯曲、压缩、拉力试验用液压万能试验机的一般特性
General characteristics of hydraulic universal testing machines for bending, compression and tension tests of hard materials
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General characteristics of hydraulic universal testing machines for bending, compression and tension tests of hard materials
Concrete - Moulds for cylindrical and prismatic test specimens
Concrete - Moulds for cylindrical and prismatic test specimens
Voltage measurement by means of standard air gaps