black and white signal generator 黑白信号发生器
nominal white signal [通信] 标称白信号
Signal white 信号白 ; 旌旗灯号白
black and white signal carrier 黑白信号载波
white signal lamp glass 白色信号灯玻璃
artificial black or white signal 仿真黑白信号 ; 仿黑或白色信号
artificial black white signal [通信] 仿黑白色信号
peak white signal 最大白电平信号
The boat that now arrived, assured by the answering signal that all was well, soon came in sight, white and silent as a phantom, and cast anchor within a cable's length of shore.
那艘帆船还是等在外面,在观察回答的信号究竟对不对,不久,它就静悄悄地驶近了,只见白朦朦的一片,象是一个幽灵似的,在离岸一箭路以外抛了锚。
The plant detects the substance and activates an internal signal that causes it to lose its green colour, turning its leaves white.
当植物监测到那些有害物品时就会激发内信号,使叶子从绿色变成白色。
Ana Wisneski of the U.S. Coast Guard. Bring plenty of water to drink, sun protection, a flashlight, vital medications, and white sheets or colorful towels to signal rescuers.
带上足够喝的水、防晒用品、手电、救命药、白色床单或者颜色鲜艳的毛巾作为求救信号。
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