单词tri-band
adj.: （手机）三频的
网络: 三频带；三频支持；三频段
（手机）三频的:
(of a mobile phone/cell phone) able to use three different ranges of radio waves so that it can be used in different regions of the world
Simulated and measured results are in good agreement, meaning that the proposed design of tri-band rat race coupler is feasible.
测量结果与仿真结果吻合良好，验证了文中三频环形耦合器设计的有效性。
This "unlocked" tri-band handset has a moderately fast data connection (2. 5G) and is the latest in a line of Sonim rugged phones.
作为Sonim一系列坚固型手机的最新成员，这款“解锁”版三频手机拥有较快的数据连接（2.5G）。
Two models available, which are Tri-Band GSM for Europe and dual band for the states.
它有两种型号，分别是欧洲用的三频版本和美国用的双频版本。
A design of tri-band planar inverted-F antenna for mobile handset
平面倒置F型三频手机天线的设计