脚本编写人员可以通过该清单执行预定信号。
These can be used by the script author to do bespoke signals.
发射器单元(100)能够发射预定信号，接收器单元(200)能够接收所述预定信号。
The transmitter unit (100) is operable to transmit a predetermined signal and the receiver unit (200) is operable to receive the predetermined signal.
卫星在成功实施分离后正运行在预定轨道，并且已经向位于肯尼亚马林迪的一个地面小组发射了通讯信号。
The satellite is currently in orbit after a successful separation and has sent communication signals which have been received by a ground team in Malindi, Kenya.
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