free transit
英 [friː ˈtrænzɪt]
美 [friː ˈtrænzɪt]
自由过境；免费运输；自由通过
双语例句
- The result shows that WLAN based on the transmission medium of free space waves is completely available and it is feasible to adopt the protocol of IPsec for greater security of wireless DCS in urban rail transit.
研究结果表明，基于空间自由波传输的无线局域网在CBTC中是完全可用的，使用IPSec协议作为城市轨道交通无线数据传输系统的安全加强措施是可行的。 - Analysis results show that the optical properties of these materials in low-energy regions are metallic because of the free electrons intraband-transition, and the transit to semiconducting properties in high-energy area is caused by valence electrons interband-transition.
结合能带结构对光学性质的分析显示，这类材料的光学性质在低能区域由于自由电子的带内跃迁呈现出金属性，高能区域则通过价电子的带间跃迁呈现出半导体特性。