epmb欧: a surname骨干: diaphysis backbone; mainstay网: net骨干网: bn backbone network; chinanet; internet backbone; pbninternet骨干网: internet backbone下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:欧骨干网，即可在微信中查询翻译
