GB/T 3221-2020内燃机动力内河船舶系泊和航行试验大纲标准
英文:Code for mooring and sea trials of internal combustion engine-driven inland ships GB/T 3221-2020介绍: 国家标准《内燃机动力内河船舶系泊和...
英文:Code for mooring and sea trials of internal combustion engine-driven inland ships GB/T 3221-2020介绍: 国家标准《内燃机动力内河船舶系泊和...