词汇	hay grading
释义	hay grading 干草分级
随便看	maritime safety communication Maritime Safety Headquarters maritime safety information maritime safety information, MSI maritime safety information via satellite maritime safety management maritime safety message maritime safety problem maritime safety procedure maritime safety system maritime safety training maritime SAR maritime SAR authority maritime SAR plan maritime SAR procedure Maritime SAR Recognition Code maritime SAR region maritime satellite maritime satellite circuit maritime satellite communication Maritime satellite communication and navigation maritime satellite data switching exchan maritime satellite data switching exchange maritime satellite data transmission sys Maritime Satellite Data Transmission System