װŚ:СׇעՓ迹UԭߵĽY(ji)ϣ偠tŷһٿߣҪͨהU(jng)^ͨڿԔUҵõٽ(jng)Сׇ,lѽlʱƸߵ20000HzϷ,lʵĶ߀ҪM(jn)һ҂ڔUbY(ji)(gu)ϵ(j)wl(f)ʣlVO(sh)ӋЧʣ(dng)ÑҪb_(d)30-42ؐʹ֮_(d)<<I(y)I(y)(bio)(zhn)>>Ҫ
װrbװY(ji)(gu)^l(ni)Ҿߜۡgă(yu)cʹЎдˮҲӰ푹ڴֱС⻬pһҪСٞ20m/s2mLֱͨװpҲ^19.612Pa迹Ǿ裩c͚ٶP(gun)O(sh)ӋװrҪӋ@ЩӰ װŚһúС1mmļٱڱÿС1mm@^ʞ1һ3xͬĴʺͰͬǻͿԿlVʹҪlʷ(ni)@õЧ
愓(chung)h(hun)Ƽ˾һҏ¹(ji)ܭh(hun)g(sh)_l(f)a(chn)ƷO(sh)ӋNۡbg(sh)Ӗ(xn)oCg(sh)죻cbg(sh)ԃc(w)һw(ji)ܭh(hun)I(y)˾ԇҹ(ji)ܜpŞB(yng)Ƽаl(f)ˆTVI(y)ϵy(tng)I(y)ϵy(tng)I(y)ˮ̎ϵy(tng)