nlnetwork layer packet网络: network; electric network me ...层: I storey; tier; stratum信息: information; message; news分组: divide into groups网络层信令: nls network layer signaling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:网络层信息分组，即可在微信中查询翻译
