... 浮子继电器 float relay 符号法 symbolic method 福尔克（电车）钢轨接头 Falk rail-joint ...
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float t relay for transformer 变压器浮子继电器
telecommunication relay float 无线电台通信中继浮标
float ball liquid level relay 浮球液位继电器
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Then, it would pump out the water, float back to the top and relay its data back to the scientists via a satellite network.
BBC: Cyber-sailors to survey oceans
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