常見例句The various access technologies are studied, as well as the technical features and application conditions for pair gain, HDSL, ADSL, HFC, WLL, FITL are discussed in this paper. 研究了各種接人網(wǎng)技術(shù)，對(duì)pairGain、HDSL、ADSL、HFC、WLL、FITL等技術(shù)的特點(diǎn)和應(yīng)用情況進(jìn)行了討論。FITL 光纖環(huán)路 返回 fitles