![]() Standard field test for the evaluation of wood preservatives by L-joint 木材防腐剂性能评估的野外地上L连接件试验方法 |
![]() Metallic materials—Webster hardness test—Part 3: Calibration of reference blocks 金属材料 韦氏硬度试验 第3部分:标准硬度块的标定 |
![]() Test method for properties of prepreg—Part 1: Determination of gel time 预浸料性能试验方法 第1部分:凝胶时间的测定 |
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