声波,电磁波等具有质量吗

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 11:03:50
xWn~_tƮVM_R[U͎]"ws2'!؆~dZ3Wy~aVE/ۊ܉>^%x#cT"?Rǻ2_E">ܫgo.$3W:K{R_gHjcUSDa`NEi K0džԗNﵥJ s2u~oG~iWN'{f+sYw;s+7|!2;V<"]q2fơȤx X1o ,~Y\ì5xDa7 |:rmjNr~4ʿ8Wd02 CNCQiޱ:;X'H_IJҟU~ !ʊ7Ƕִ%{ޅ>cٖXwrn^^(8Ojߘө9?4)i\v{hߴY&D2nEBhn98Eqb85=%[Z.R]^"M  A{b ?N9b~VTqS8ؓfzJ%}ڱiԥZMZ僱h H^[bD1 ȯjubvlyh޹&Үܥ/U0tZ]wvNAL 4f.ٳfq͒=|f 8kI$IfuBfCV7y1jCMSK)R)q[k+0p؃E D )*Sf ^5XR_9T!|w߁`$^(h^ڱw@e|Ж@T?CThDP bz^["ѱR7BV[3gE(v, )PH4@.7F5%' >\hHڤB14%y.ֻS+I%vZhX]v e./^?/ϻz;}Vp=,}_Z