... electromagnetic theory of light 光的电磁理论 electromodulation 电调制 electron beam projection exposure apparatus 电子束投影曝光装置 ...
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红外气体传感器采用开放式气室，选用高信噪比的探测器和电调制的MEMS红外光源。
The infrared gas sensor contains an open-path gas chamber, a high SNR (signal to noise ratio) infrared detector, and an electrical modulated MEMS infrared emitter.
对于无线数字通信而言，通常将数字用户信号首先转换到模拟域中，然后通过一个或两个步骤将其调制到无线电频率。
For wireless digital communications, digital user signal is usually at first converted into analog domain and then modulated to radio frequency by one or two steps.
治疗组应用低频调制中频脉冲电进行2 ~ 6个月治疗。
The treatment group were treated with modulated medium frequency impulsed electrotherapy for 2-6 months.
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