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单词 wave trap
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wave trap
wave trap n. (a) (see quots.); (b) Radio = trap n.1 8d.
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society > communication > telecommunication > radio communications > radio equipment > [noun] > radio set > devices for preventing interference
wave trap1875
interference preventer1905
x-stopper1906
trap1927
squelch1937
1875 E. H. Knight Pract. Dict. Mech. Wave-trap (Hydraulic Engineering), a widening inwards of the sides of piers, to afford space for storm-waves which roll in at the entrance to spread and extend themselves.
1923 Mod. Wireless 1 247/2 The second frame aerial..is stated..to act as a ‘wave-trap’.
1968 Radio Communication Handbk. (ed. 4) xvi. 3/1 If the generator whine remains pronounced, a fully screened tuned wave trap may be inserted in series with the output from the generator.
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