DTGITAL OUT OPTICAL是什么意思呢?

DTGITAL OUT OPTICAL是什么意思呢? optical optical 光输出耦合在“the organic LED with a grating for enhanced optical out coupling”里面,optical out coupling 是翻译成光耦合输出?那它的概念是什么? SPDIF Out:Optical and Coaxial声卡里有Optical跟Coaxial,哪个比较好? 英语翻译主要是optical carpets怎么翻? 英语翻译ok,那么optical double是光学双星吗? 请问FOR 24 Optical Fibre Cable Jointing Kit for 24 Optical Fibre Cable Jointing Kits 是说的什么东东 International Journal of Microwave and Optical Technology 和Microwave and Optical Technology Letters是同一家杂志吗?怎么查. optical disk cable optical optical digital optical ratchets optical digital Laser and optical vibration measurement是什么意思?Laser and optical vibration measurement 是激光测试和光学振动测试还是激光和光学振动测试 光缆的英文关键词有哪些?（急!）是像optical fiber cable 这种关键词， she needs to go to optical.这句话的意思是,她要去眼镜店 光纤通信计算题 计算简便22、Consider a 30-km long optical fiber that has an attenuation of 0.8 db/km at 1300nm.If 200uW of optical power in launched into the fiber,let us find the optical output power Pout（out为下标）.Please explain