负荷电流由调节器通过半导体开关元件直接控制。
The load current is handled directly by the controller through semiconductor switching devices .
在那些耦合状态下，由温度调节器来的负荷变动指令被旁路，由于耦合系统闭环的性质，空气和燃料流量变化极慢。
In those coupling states, the load change command from temperature controller is by-passed, and the air and fuel flows change very slowly because of the nature of the closed coupling system.
这一缺点严重影响到温度调节器的整定，当负荷变化指令变动频繁时温度控制效果也不会好。
This defect seriously affects the tuning of temperature controller and causes bad temperature control results when the load change command varies very often.
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