1CS79.040CCS B 68中华人民共和国国家标准GB/T1927.21一2022代替GB/T14018-2009无疵小试样木材物理力学性质试验方法第21部分:握钉力测定Test methods for physical and mechanical properties of small clear woodspecimens-Part 21:Determination of nail and screw holding power(ISO 9087:1998,Wood-Determination of nail and screw holding power underaxial load application,MOD)2022-12-30发布2022-12-30实施国家市场监督管理兽局发布国家标准化管理委员会