base communications
短语词形变化
only
复数
释义与例句
n.
-
1.
Communications services, such as the installation, operation, maintenance, augmentation, modification, and rehabilitation of communications networks, systems, facilities, and equipment, including off-post extensions, provided for the operation of a military post, camp, installation, station, or activity.
美国 仅复数 媒体 工程 政治 军事