YӍ(bio)}m^(q)W(xu)CADƈDO(sh)Ӌ(j)ȥʲôW(xu)У
XO(sh)Ӌ(j)Ϣ m^(q)CADƈDO(sh)Ӌ(j)ǺcadӖ(xn)W(xu)Уc(din)I(y)֪CADƈDO(sh)Ӌ(j)Ӗ(xn)C(j)(gu)Ӗ(xn)֪ƷcadӖ(xn)W(xu)УYۺȫоO(sh)зУW(xu)Уgӭļ
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O(sh)Ӌ(j)ߺ_ʼʹӋ(j)C(j)M(jn)Ӌ(j)J(rn)飨._ɪmIvan Sutherland1963ʡW(xu)Ժ_l(f)Sketchpad壩һ(g)D(zhun)c(din)SKETCHPADͻSO(sh)Ӌ(j)ÈDηʽӋ(j)C(j)O(sh)Ӌ(j)һ֦PꎘO侀ĻLƵӋ(j)C(j)(sh)H@LjDλÑԭͣ@NǬF(xin)CADɻȱ
SXƼl(f)չܵ˵ăr(ji)S˾ѲwLDO(sh)Ӌ(j)KXܵLDܛֻͣƽO(sh)Ӌ(j)Ƿȱ挍(sh)wLDt_@һO(sh)Ӌ(j){(ln)D(sh)w3DDLҲ܉_(d)2DDoLƵ܉ֱ_(d)O(sh)Ӌ(j)D
̈DӵĽDδӡݔO(sh)ıݔ;DLƾCϾ(x)
O(sh)Ӌ(j)һNB(ti)ȣO(sh)Ӌ(j)һNƷζ
ҲS֮gΨһ(yng)ԓܵݵءQ@ʾ|(zh)һNoȼ(dng)ĵ^̡ͮһӰԒһN{(dio) Ѫɫ(dng)u(dng) ̖ǵĴߴٕr(sh)Dr(sh)\¶|(zh)Ľkͼ(dng)Ȼ@|(zh)DZųζ;˲oxĿ (yng)(dng)J(rn)ϣ(yng)(dng)fɺӹײԓ^ԓ`J(rn)ѽ(jng)ɹ˸к漃bҲͬӲܳ־?yn)r(sh)gһlL _ˢ̺h(yun)Ԋ˺͑(zhn)ʿĹПoıM^ĺˌLõظе
CADđ(yng)܇պԼӹI(y)Ĵ˾SӋ(j)C(j)׃øˣ(yng)÷Ҳu׃V
m^(q)W(xu)CADƈDO(sh)Ӌ(j)ȥʲôW(xu)У,_CAD_CAD_ʼLD~LDǰҪʲô(zhn)أLΈDǷNיMPͲÜ(zhn)ʲôLƵǏ(f)s̈D҂ҪúÜ(zhn)һ¡
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ʮo(j)80PCC(j)đ(yng)CADӋ(j)C(j)oO(sh)Ӌ(j)Ѹٰl(f)չF(xin)ˌTCADϵy(tng)_l(f)Ĺ˾(dng)r(sh)VersaCADnjI(y)CAD˾_l(f)CADܛ(qing)r(ji)Fʵòձ鑪(yng)(dng)r(sh)AutodeskXܛ˾˾һ(g)HІT(sh)˵С˾_l(f)CADϵy(tng)mȻM(fi)ؐԏV(yng)ͬr(sh)ԓϵy(tng)_ԣԓCADܛѸ
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