GB/T 37320-2019船舶和海上技术船用磁罗经、罗经柜和方位读数仪国家标准
英文:Ships and marine technology—Marine magnetic compasses, binnacles and azimuth reading devices GB/T 37320-2019介绍: 国家标准《...
英文:Ships and marine technology—Marine magnetic compasses, binnacles and azimuth reading devices GB/T 37320-2019介绍: 国家标准《...