科学家们构想了一种在磁光晶体结构中的铁氧体磁棒阵列通道，这通道可以通过控制磁场而打开或关闭。
The scientists envision an array of ferrite rods in a magnetic photonic crystal structure that forms a gateway.The gateway could be opened and closed by controlling the magnetic fields.
这种控制晶体形状的调焦肌肉(睫状肌)，长期处于收缩状态。
The focusing muscle (ciliary muscle), which controls the shape of the lens, is thus in a constant state of contraction.
传统晶体管使用一个叫做“栅极”的金属电极，以控制电子在平面硅基片上的沟道中的流动。
Conventional transistors use a metal electrode, called the gate, to control the flow of electrons through a planar channel in the silicon substrate.
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