07/03/28 05:02:18 V0TD/Nnl0
3.13 Skid block:
3.13.1
b) be made from an homogeneous material with a specific gravity between 1.3 and 1.45.
と素材に関しては比重しか規定されてない。
07/03/28 05:02:18 V0TD/Nnl0
3.13 Skid block:
3.13.1
b) be made from an homogeneous material with a specific gravity between 1.3 and 1.45.
と素材に関しては比重しか規定されてない。