anticipatory water level signal 预期水位状态
demand level 需求层次; 需要的层次
digital signal level 0 数字信号-0级; 数字信号位准0; 阶数字讯号
Digital Signal Level 0- Digital Signal Level 3 DS0-DS3 零阶数字信号和三阶数字信号
digital signal level 0, DS-0 0 阶数字讯号
digital signal level 1 数字信号位准1; 阶数字讯号
digital signal level 1, DS-1 1 阶数字讯号
digital signal level 2 数字信号位准2
Digital Signal Level 3 数字信号位准3; 阶数字讯号
digital signal level 3, DS-3 3 阶数字讯号
digital signal level 4 数字信号位准4
digital signal level 5 数字信号位准5
digital signal,level n DS-n 数字信号; 级别n
direction level signal 方向电平信号
facsimile signal level 传真信号位准
facsimile-signal level 传真信号位准
high level signal 高电平信号
high water level signal 高水位信号
LEVEL level 水平