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#1                   ƽƫľ׶ܷ˵

    1Ϊ¿ھΪˮƽΣεĳȡֵƫĵӹܹpxpyΪ0ʱΪ˫ƫĵľӹܣpxpyһΪ0ʱΪƫľӹܣpxpyΪ0ʱΪľӹܡ
    2ʾͼL1Ϊ¾ؿڱ߳ȣL2ΪϾؿڱ߳ȣw1Ϊ¾ؿڱ߿ȣw2ΪϾؿڱ߿ȣhΪӹܸ߶, pxpyΪ¾ؿxyƫľ룬bΪĺȡҪL1L2w1w2hb>0pxpyȡʵ
    3pxpyֵҪ¾Ϊo㣬¾ؿֱɵֱϵȷϾoҷʱpxΪֵʱpxΪֵϾoϷʱpyΪֵo·ʱpyΪֵoغΪ0pxpyرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs1Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶˷ֱΪԲģLs4L2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܡƴʱעⷽҪͼֽͬɷ˷ѡ


$1


#2                   ƽбƫľ׶ܷ˵

    1ΪϿˮƽ¿б¿ھΪΣεĳȡֵƫĵӹܹpxpyΪ0ʱΪ˫ƫĵƽбӹܣpxpyһΪ0ʱΪƫƽбӹܣpxpyΪ0ʱΪƽбӹܡ
    2ʾͼL1Ϊ¾ؿڱ߳ȣL2ΪϾؿڱ߳ȣw1Ϊ¾ؿڱ߿ȣw2ΪϾؿڱ߿ȣhΪӹܸ߶, pxpyΪ¾ؿxyƫľ, aΪ¿бǶȣbΪĺȡҪL1L2w1w2hb>0-90<a<90pxpyȡʵ
    3pxpyֵҪ¾Ϊo㣬¾ؿֱɵֱϵȷϾoҷʱpxΪֵʱpxΪֵϾoϷʱpyΪֵo·ʱpyΪֵoغΪ0²ؿaͼʾȡֵ෴ȡֵpxpyaرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs4(Ls1)Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶()˷ֱΪԲģLs1(Ls4)L2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ


$2


#3                   бƽƫľ׶ܷ˵

    1ΪϿб¿ˮƽ¿ھΪΣεĳȡֵƫĵӹܹչǰͼʾбģʵʹбģҲһãpyֵɡ
    2ʾͼL1Ϊ¾ؿڱ߳ȣL2ΪϾؿڱ߳ȣw1Ϊ¾ؿڱ߿ȣw2ΪϾؿڱ߿ȣhΪӹܸ߶, pxpyΪ¾ؿxyƫľ, aΪϿбǶȣbΪĺȡҪL1L2w1w2hab>0px>=0pyȡʵ
    3pyֵҪ¾Ϊo㣬¾ؿֱɵֱϵȷϾoϷʱpyΪֵo·ʱpyΪֵoغΪ0pyرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs1Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶˷ֱΪԲģLs4L2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ


$3


#4                   ¿бƫľ׶ܷ˵

    1Ϊ¿ھΪбεĳȡֵƫĵӹܹչǰͼʾбģʵʹбģҲһãpyֵɡ
    2ʾͼL1Ϊ¾ؿڱ߳ȣL2ΪϾؿڱ߳ȣw1Ϊ¾ؿڱ߿ȣw2ΪϾؿڱ߿ȣhΪӹĵ㴹ֱ߶, pxpyΪ¾ؿxyƫľ, a1Ϊ¿бǶȣ a2ΪϿбǶȣbΪĺȡҪL1L2w1w2ha1a2b>0px>=0pyȡʵ
    3pyֵҪ¾Ϊo㣬¾ؿֱɵֱϵȷϾoϷʱpyΪֵo·ʱpyΪֵoغΪ0pyرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs4Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶Ҷ˷ֱΪԲģLs1L2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ


$4


#5                   ƽ´ֱƫľ׶ܷ˵

    1ΪϿˮƽ¿ڴֱ¿ھΪΣεĳȡֵƫĵӹܹpxpyΪ0ʱΪ˫ƫĵƽ´ֱӹܣpxpyһΪ0ʱΪƫƽ´ֱӹܣpxpyΪ0ʱΪƽ´ֱӹܡ
    2ʾͼL1ΪϾؿڱ߳ȣh2Ϊ¾ؿڱ߸߶ȣw1ΪϾؿڱ߿ȣw2Ϊ¾ؿڱ߿ȣhΪӹĵ㴹ֱ߶, pxpyΪ¾ؿxyƫľ, bΪĺȡҪL1h2w1w2hb>0pxpyȡʵ
    3pxpyֵҪϾΪo㣬Ͼؿֱɵֱϵȷ¿ھoҷʱpxΪֵʱpxΪֵ¿ھoϷʱpyΪֵo·ʱpyΪֵoغΪ0pxpyرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs1(Ls4)Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶()˷ֱΪԲģLs4(Ls1)h2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ


$5


#6                   ϴֱƽƫľ׶ܷ˵

    1Ϊ¿ˮƽϿڴֱ¿ھΪΣεĳȡֵƫĵӹܹpyΪ0ʱΪ˫ƫĵϴֱƽӹܣpyΪ0ʱΪƫϴֱƽӹܡ
    2ʾͼL1Ϊ¾ؿڱ߳ȣh2ΪϾؿڱ߸߶ȣw1Ϊ¾ؿڱ߿ȣw2ΪϾؿڱ߿ȣhΪӹĵ㴹ֱ߶, pxpyΪ¾ؿxyƫľ, bΪĺȡҪL1h2w1w2hb>0pxľֵL1/2pyȡʵ
    3pxpyֵҪ¾Ϊo㣬¿ֱɵֱϵȷϿھoҷʱpxΪֵʱpxΪֵϿھoϷʱpyΪֵo·ʱpyΪֵoغΪ0pxpyرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs4(Ls1)Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶()˵ֱΪԲģLs1(Ls4)h2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ


$6


#7                   ˿ŤתǶȷ׶ܷ˵

    1Ϊ¿ھΪˮƽΣεĳȡֵƫģ¾ؿŤתһǶȵӹܹpxpyΪ0ʱΪ˫ƫĵ˿ŤתǶȾӹܣpxpyһΪ0ʱΪƫ˿ŤתǶȾӹܣpxpyΪ0ʱΪ˿ŤתǶȾӹܡ
    2ʾͼL1ΪϾؿڱ߳ȣL2Ϊ¾ؿڱ߳ȣw1ΪϾؿڱ߿ȣw2ΪϾؿڱ߿ȣhΪӹĵ㴹ֱ߶, pxpyΪ¾ؿxyƫľ룬aΪؿƫתǶȣbΪĺȡҪL1L2w1w2hb>0-45<a<45aܵ0pxpyȡʵ
    3pxpyֵҪϾΪo㣬Ͼؿֱɵֱϵȷ¿ھoҷʱpxΪֵʱpxΪֵ¿ھoϷʱpyΪֵo·ʱpyΪֵoغΪ0aֱֵϰȷʱ뷽Ϊֵ˳ʱ뷽Ϊֵpxpyaرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (1)һֱ߶ΣȵL1
    (2)ͼֱL1߶˵ΪԲģLs1(Ls4)Lx1Ϊ뾶һ㡣ȻԽ㡢L1߶()˵ֱΪԲģLs4(Ls1)L2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰĿ¿ھͬһƽڣҪ϶Խ䷽׼ȷƴӣɹֳ


$7


#8                   б׶ͨ˵

    1Ϊ¿ھΪˮƽε׶ͨεĳȡֵƫģ²ؿyƫӦһ¡
    2ʾͼL1ΪϾؿڱ߳ȣL2Ϊ¾ؿڱ߳ȣL3Ϊ¾ؿڱ߳ȣw1ΪϾؿڱ߿ȣw2Ϊ¾ؿڱ߿ȣw3Ϊ¾ؿڱ߿ȣhΪֱͨ߶, px1px2Ϊҡؿxƫľ룬pyΪ²ؿyƫľ룬bΪĺȡҪL1L2L3w1w2w3hpx1px2b>0px1px2>(L2+L3)/2pyȡʵ
    3pyֵҪϾΪo㣬Ͼؿֱɵֱϵȷ¿ھoϷʱpyΪֵo·ʱpyΪֵoغΪ0pyرעֵ󣬿ܻᵼ²ȷչͼ
    4չͼηϣÿֳνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (һ)һչͼ
    (1)һֱ߶ΣȵL1(w2<w3ΪLk1ͬ)
    (2)ͼֱL1(Lk1)߶˵ΪԲģLs4(Le4)Lx1(Lj1)Ϊ뾶һ㡣ȻԽ㡢L1(Lk1)߶Ҷ˵ֱΪԲģLs1(Le1)L2ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢L1(Lk1)߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ
    (һ)Ŷչͼ
    (1)һֱ߶ΣȵLk1(w2<w3ΪL1ͬ)
    (2)ͼֱLk1(L1)߶˵ΪԲģLe1(Ls1)Lj1(Lx1)Ϊ뾶һ㡣ȻԽ㡢Lk1(L1)߶˵ֱΪԲģLe4(Ls4)L3ֱΪ뾶Բཻһ㣬ͼӽ뽻㡢Lk1(L1)߶˵㣬ɵõչͼ
    (3)ͼϻͼ˳ֱ𻭳ҲԼǰչͼչͼ԰ͼϣҲÿ鵥ϡ
    (4)չͼߣʵߣÿƴӳӹܣƴʱעⷽҪͼֽͬɷ˷ѡǰ¿ڲһͬһƽڣʱҪ϶Խ䷽׼ȷƴӣɹֳ


$8


#9                   Բɾͷ˵

    1¿ΪˮƽΣϿΪˮƽǵľΣεͬһƽڣȡֵؿ֮Բɵľͷ
    2ʾͼL1Ϊ¾ؿڱ߳ȣh2ΪϾؿڱ߸߶ȣw1Ϊ¾ؿڱ߿ȣw2ΪϾؿڱ߿ȣRΪͷת뾶aΪ¾ؿƫתǶȣbΪĺȡҪL1h2w1w2b>045<=a<=90һáR>=(L1+h2)*0.6λխR<=(L1+h2)*0.6ͷӴ
    3չͼͷԲΪչ nȷÿһߵʵnֵɲ߸ҪԶnֵԽչͼľԽߣչͼĹӦӡһȡn=8~20ѿ൱׼ȷϡ
    4չͼηϣÿֳɸνмݰڱ߼ϣֱӸڰϣʱⲿԽǺɲչʾͼ·
    (һ)չͼ
    (1)һֱ߶ΣȵLa(1)
    (2)ͼֱLa(1)߶˵ΪԲģLb(1)m1Ϊ뾶һ㡣ȻԽ㡢La(1)߶˵ֱΪԲģLa(2)m2ֱΪ뾶Բཻһ㣬ͼ˳ֱ𻭳㡣Ӹ㣬ɵõչͼ
    (3)ڲ¿ڲһͬһƽڣʱҪ䷽׼ȷƴӣɹֳ
    ()չͼ
    (1)һֱ߶Σȵw1
    (2)w1е㻭ߴֱw1ߣȡsl1(sl2)ȣȡԳƻw2ƽw1ߡ
    (3)ͼw1w2˵㣬ɵõչͼƴװʱϡ밴Բֱƴװɹֳ



$9


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