铁道第二勘察设计院  The Second Survey Design Institute of China Railways; border scales of meters; The Second Surveying and Designing Institute of Railway Ministry; border spaces

铁道第二勘察设计院环境工程研究院  Department of Environmental Engineering; No.2 Railweys Survey Design Institute; No.2 Railways Survey Design Institute

铁道第二勘察设计院昆明研究院  kunming branch; Exploration Design Institute 2 of Railway Ministry

第二波道干扰  second-channel interference

第二层隧道协定  Layer 2 Tunneling Protocol; layer two tunneling protocol; L2TP

第二层隧道协议  IRClayer 2 tunneling protocol; L2TF Layer Two Tunneling Protocol; Layer 2 Tunneling Protocol; L2TP

第二层通道通信协议  Aquatic products process industries

第二个泌尿道肿瘤  Second location tumor

第二通道  second channel

第二通道干扰  second channel interference

铁道部第二工程局环境保护办公室  e.p. office; the second Engineering Bureau of the Ministry of Railways

铁道部第二勘测设计院  The Second Survey and Design Institute Ministry of Railway; The 2nd Surveying Designing Institute. Ministry of Railways. Chengdu. China; 3-Butyl-4-methoxyphthalide; The Second Survey and Design Institute of Railway Ministry; The no. 2 Design Exploring Institute; Ministry of Railrways

铁道部第二勘测设计院科研所  The Second Surveying and Designing Institute; Ministry of Railways; Chendu

铁道部第二勘测设计院岩土工程公司  The No. 2 Survey and Design Institute; Ministry of Railway

铁道部第二勘察设计院地勘分院  The Second Surveying and Designing Institute of Railroad

增强型第二层隧道协议  enhance of two layer tunnel protocol

增强型第二层隧道协议eL2TP  eL2TP enhanced layer two tunneling protocol

第二、第三掌背动脉  Second or third dorsal metacarpal artery

[第]二级光谱  secondary spectrum