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UˮҪʳÏUˮסޏUˮkUˮʳÏUˮкдĄ(dng)ֲ(yng)O(sh)ÆΪ(d)ͳ̎(jng)ͳA(y)̎ʳÏUˮRͬkUˮסޏUˮٽ(jng)S̎oͨ^ˮܾW(wng)M(jn)ˮ̎S̎(xing)Ŀ܇oˮ̎SܾW(wng)O(sh)ȫ(xing)Ŀˮܽˮ̎S̎t(j)(xing)ĿˮKܼ{ˮwıo(h)ȼ(j)x(yng)ˮ̎ʽ̎

ˮ̎O(sh)L(fng)C(j)ЙC(j)еO(sh)伯вһ(g)Ԫ(ni)\(yn)й늚O(sh)䲼ڸO(sh)g(ni)ԓԪP(gun)Ҏ(gu)O(sh)Ӌ(j)ͨL(fng)O(sh)ʩO(sh)бֱͨѲҕzͨtݵĽǶȲ^45O(sh)䲼Ñ(yng)]\(yn)SˆTIJlO(sh)O(sh)Ĺb\(yn)zõ˿ͨ

ϵy(tng)(ni)D(zhun)(dng)C(j)еO(sh)䣨ˮáL(fng)C(j)ȣõ\(yn)ˮL(fng)C(j)•(dng)ָ(bio)MtO(sh)(yng)ķpʩL(fng)C(j)ڲpӸ\(yn)ھL(fng)C(j)1.5m80dB

L(fng)C(j)gãУ2_(ti)11

̎ϵy(tng)(ni)x׽Y(ji)ĤÓĤp|(zh)ߏ(qing)ȡg϶ʸߵď

ʽˮ̎O(sh) 

͏UˮҪԴʯʯͻFúl(f)վC(j)еӹȹI(y)TUˮȾ|(zh)ؽ͵(du)ܶȞ1.1(du)ܶȶС1|(zh)ڏUˮͨNB(ti)ڡ(1)͵100mڏďUˮзx(2)ɢ.͵10һ100m֮gˮ(3)黯͵С10m׏ďUˮзx

1)^VЧ:Ͻ^VM(jn)ˮеĴw͑Ҹ;

2)ˮЧ:΢܉?q)ӵIJԵ|(zh)ˮD(zhun)СӵĿԵ|(zh);

3)Ч:΢ˮеЙC(j)ȾһڱL(zhng)һӚķʽ(jng)^Uˮ;

4)ÓЧ:|ˮV΢еķûˮеB(ti)D(zhun)鵪?d)⣬ȥˮеĵ|(zh)

 

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