单词 | capacitance-operated intrusion detector |
释义 | capacitance-operated intrusion detector [kǝ`pas·ǝ·tǝns ¦ȧȧp·ǝ´rād·ǝd in`trü·zhǝn di`tek·tǝr] ENGINEERING A boundary alarm system in which the approach of an intruder to an antenna wire encircling the protected area a few feet above ground changes the antenna-ground capacitance and sets off the alarm. |
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