I was utterly intimidated by the practicalelectronics that formed part of my final undergraduate physics course at London University, and I enquired as to possible alternatives.
However, in recent years wireless sensors have become practical, thanks to the miniaturization of electronics and improvements in battery and radio technology.
然而，近几年多亏迷型电子及电池和录音机技术的提高让无线传感器变得实用。
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This extraordinarily practical approach allows readers to focus exclusively on the electronics information they will use in the field, without bogging them down in unnecessary theory.