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Happy Father's Day! Father's Day is a fairly new celebration in the British calendar compared with Mother's Day, which has been a very popular and well celebrated festival in the UK for a very long time. The origins of the celebration are American a
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Multimode Optical Fiber(S) Multimode fibers, with much wider cores than single mode fibers, allow light to enter at various angles, and reflect (bounce off of) core-clad boundaries as electromagnetic
Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor
new year's day 新年的这一天 歌手:U2 Yeah... All is quiet on New Year's Day 在新年的这天一切都那么安详 A world in white gets underway 一个洁白的世界正在静悄悄的诞生 I want to be with you 我想和你在一起 Be w