Semel in Die (Latin: Once A Day)在拉丁美洲之所以让人每天一次 Security Identifier安全识别标志 Standard Instrument Departure标准仪表离场 Sudden Ionospheric Disturbance(通常由太阳引起的)电离层突然骚动 Society for Information Display社会对信息显示 Station Identification局识别 System Identification系统识别码 Station Identifier局识别符 Subscriber Identification用户识别 Skin Irritant DecontaminantDecontaminant对皮肤的刺激 Sanitary Improvement District卫生改善区域 Secondary Imagery Dissemination二次成像传播 Spatially Immersive Display引人入胜的展示空间 Special Improvement District特殊的改善区域 Send Identifier送标识