简介：文中借鉴《2003年海员身份证件公约》的实施经验以及海员身份证件的改进措施,建议改进现行海员证,参照适用通用的国际标准,通过采用生物识别、数字签名、非接触式芯片等现代技术提升我国海员证的安全性和验证效率,为持续保持海员证的适用性和通用性提供保证。

简介：Inordertostudytheeffectsofwetcompressiononatransoniccompressor,afull3-Dsteadynumericalsimulationwascarriedoutundervaryingconditions.Differentinjectedwaterflowratesanddropletdiameterswereconsidered.Theeffectofwetcompressionontheshock,separatedflow,pressureratio,andefficiencywasinvestigated.Additionally,theeffectofwetcompressiononthetipclearancewhenthecompressorrunsinthenear-stallandstallsituationswasemphasized.Analysisoftheresultsshowsthattherangeofstableoperationisextended,andthatthepressureratioandinletairflowratearealsoincreasedatthenear-stallpoint.Inaddition,itseemsthatthereisanoptimumsizeofthedropletdiameter.