目前，16和32通道DWDM设备已经在我国东部沿海发达地区多条业务繁忙线路上投入运行。
Presently, 16 and 32 channels DWDM equipment has been adopted on several busy lines in the eastern-coast economic dynamic area of China.
本市东邻河北省，西连西北区陕西省，处于我国东部沿海经济发达地区和西北内陆经济欠发达地区之间。
Hebei province, the city east, west and north-western Shaanxi province, in China's economically developed eastern coastal areas and economically underdeveloped inland northwest region.
本市东邻河北省，西连西北区陕西省，处于我国东部沿海经济发达地区和西北内陆经济欠发达地区之间。
Hebei province, the city east, west and north-western Shaanxi province, in China's economically developed eastern coastal areas and economically underdeveloped inland northwest region.
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