土壤中的土,主要成分也是二氧化硅吗?

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 03:41:58
xXInH7 T*}u%Y@Y`Ͳ,Y JI wdD+_ߏi˽)w2? ~{jlykuK,tz|M\&X/?㷯_>Ygĭґ(Y]Mx}JwW{!6{)%b6 ܋JOdn`;bƃcTW,eAo96-(mxe72H>c6貭#װ\qc#7cVpŸ@-7vviHEt7}/bQbX|+O~\=.?mÎ@] &s+On*s#JI'l7$>SHmi*(R VHuyOor%T3BcXEXW"z4Jy^_k2w"\LyKhJ77Zcw-2@)],r^wKȰdy | " 4\3fcJ؈fU4#soeko̒b){F1K[+pbW=0̍-|l&=Qv)1ɡkL MU^] {E V}fd>jA {x TA LC2V&~8" 6~> ;ƻdULs"B²}OXڴm:Hކ[k;CT b#^k@ DAOn>6lýwR)ὕ[Ȱk)$'>D-,N/[sw7x1sb:}C4$^Yo1$tGqv]gت!ox_";!^YR+Nؓg\GNm8&Uȓ/ힺ@3A]u(3d$fSFUVKc7ssBX6q!{\;ou\`FJ6BV:Đ򾈿n#yhR RXf1g{6_~)ّ_pu#@`*\P2eC-0Vߓ3,6T#|@č f;RUSp|XtgCa/|A^@qǢMhOm%!)~:Y߻FcXTṚA}T)w\% QO0UoOyRϔk$/,Aԝ:\bذFQymS **2("&QHlhJhMoULT##k 'u#lu/A]tl~Iiӯ*99QJD4ϭ ubxY0hNƼhet(JKx~JBͽG= X 7~E@c}5liErĚji(!3 호퀂ӊlDPNlz-|wb B(ZbvcS>! {IY.rC4[k3XSD'` 0N*QKۓ`*Y~PBnѡDL ª^mjok y#).e <ÑP] !N,zy{|oWywmS ^XG`zs$3:p#"i