都江堰的治水原理是什么?

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/06 03:52:57
xWn"IyRTuMw[*|J3?il0``bb!_Fd>/̹ FH3s_ɽ\t;Wwr+upb_}!;@=D&mڧU/cyJ= VU~f%ܼ9}lUfŽj&u| w k]jiW)Q-Gc>}H;\)#2;{OU LUmjV5l w8 |3>JI5*.;uSGwĮwb2xW -8r^~_;w=v7Ya0![`:vLDrNO>Nִnd=^wZR|2{eQ&Cj#WI0vgʇKJf)e^l24 >_GiEQeڮEz~xDo#dL5+DQ:SmGoON^@=Aʲ1sK5 {o:*7&{[)bg?`9EeiCK5V<MS5'b?麨oAb!?~s]Uam3l?$j<̐b1\ $b u ^l53 -U/#6t]iPS?^6H-҈JRj iL,`L.W*L%\"m6T`)_<DZ+YAFtnђ|O ꕴ$!TZ #h(To_rSI@?3uVPYTf:2o*[ 7-JJ|pofN:iFbBxSr/ Qc皊bX$!͘>aPj-Jk}!YhH;D9\2ʜniB2*q?J'+]jM$MڒE1)4URVGipll `2JW{RӬc@KRSc:1x>/~i  ̅lEȕ-\SZi|e#BW 1f~ri}e%S~DEpJPӖcJNs`aS /% \srLf@Lƣ E6@kuq))c QݗjtͲ_Q/"pjvQ _t0d5E-|l&PeCs-N#gCY C Ѳ2~zNjtҕi=7M̰"-)o]zӑ$y(# 8d1°2a已\~18\*3FQ/&cߝC"ǔtX(V}ʁAABrQ[lnFupS~oN #v 3Tnp9e;St>2j5YT&]H2Z5 Jp̄M]k rR?P__GԞ)Qx, )}x\ Ǟ!&e}2znkf~Ԡ&ߒ=dVLDВAO!);pF#%st! Ņ4u$|s+kßpft?9~_#y2Ř: Nv O\X.$EڏW^̭8=|ne e(+ۼVz?uK!h^Fj949vLnu l8ś[rU/+ h(-OՅq64Mr7a('0_]d-qÃ