The formation of the complex between lead ion and immobilized xylenol orange caused a large reflected light intensity change, and lead ion in the solution can be determinated.
铅离子与固定在阴离子交换树脂上的二甲酚橙的络合反应，使试剂相光反射强度发生了很大的变化，从而使溶液中的铅离子得以测定。
Modulating the ultrasonic wave, intensity and period of the light pulse will change.
调节超声波，可改变光脉冲的强度和周期。
About LED lights and traffic lights control system devices together, use each section of the traffic lights change to achieve the next section of the control of light intensity.
即将LED路灯装置与交通红绿灯控制系统结合在一起，利用每一路段红绿灯的转换实现对下一路段灯光强弱的控制。
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