Calculation of current coil is discussed to middle relay and signalrelay, lay stress on signalrelay that contents condition and selects a type in different circumstances.
介绍中间继电器和信号继电器电流线圈的计算，着重分析信号继电器所需满足的条件和在不同情况下的选型。
2
High leptin levels relay the opposite signal.
高消瘦素水平传递相反的信号。
3
The transmission of an extracellular signal from the surface of the cell to the nucleus by a relay of protein-protein and protein-ligand interactions.