bridge attenuation 中文意思是什麼
bridge attenuation
解釋
橋接衰減- bridge : n 1 橋，橋梁；【造船】艦橋，船橋。2 鼻樑；（假牙上的）齒橋；【音樂】弦柱，弦馬；【電學】電橋；【...
- attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
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For recent years, adsl has world widely employed and widely used in many aspects such as vod, remote medical treatment and e - shopping etc. but we noticed that the traditional telephone networks are designed for the transmission of low frequency signals, and the adsl ' s frequency rang is from 0 to 1. 104mhz, so we must confront the signal attenuation, the loop line noise impairments, the crosstalk interferences, the bridge tap reflections and the rf disturbances problems and many other problems when transmitting the adsl signals one the telephone networks
近幾年來， adsl在世界范圍內得到充分的使用，廣泛應用於視頻點播、遠程醫療、網上購物等各個方面。但是由於電話線網路是專門為傳輸低頻信號而設計，而adsl的頻譜范圍在0 1 . 104mhz內，因此在傳輸adsl信號時，面臨著信號衰減、線路噪聲、串音干擾、橋接抽頭反射和射頻干擾等等多方面的問題，這就要求在adsl開通之前對線路進行一系列的測試。 -
The structural characteristic of rc bridge is that the resisting force is deteriorating in life service of bridge, but most of reliability researches do n ' t consider the attenuation of resisting force until recent
既有混凝土橋梁結構的特點是抗力隨時間不斷衰減，但目前大多數的可靠度研究都沒有涉及到抗力衰減。
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