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        ƫR ʲôƫR

        һNԃɌӲճϣgAһNИOėUYwzĤ@NzĤ⾀ƫãԽƫĤMӵĹͨ^ƫR󣬳ɞӣӲֻȫգͨ^ƫRĹⲨֻкRȾwzƽзƽӡ ʹƫRĔzrƫRڔzӰR^ǰ棬ͨ^ȡһ߅^һ߅DR棬Ա^ƫЧ^쵽zwķʧrȿֹͣDR档 ƫRڔzӰЩ; ƫRڔzӰоŽׂ; p⻬wķ Ĕz⻬w粣ˮ桢Й桢ϱȣFҫ߻򷴹⣬@ڹ⾀ƫġĔzrƫRmDƫR棬܉@Щƫ⣬p@Щ⻬wķߣõرFzwļ|С ȣʹ{׃ ƫRֹյʹ⾀ãƫRķc̫ꖹ☋90 rеʹ⾀裻ƫRķ򘋳0180rƫá{дڴƫ⣬ƫR܉{յȣƫRԺ{׃ĺܰͻ{еİơƫRǻɫģںڰ׺ͲɫzӰоʹá ԻҞVRʹ ƫRǻɫģƬƫRBӣֹһֹ⾀ͨ^ԻҞVRáʹÕrDӃɂƫS֮gĊAǣɫ@ò̶ͬȵʡ ߲ɫӰɫ ʹƫR܉⻬wķҫߡwFķҫ߲ʹ@Ӱʧȥ|УͬrҲ@ؽ˱zwɫʵɫȣ˱zwķҫߣͬrҲͲ̶ͬȵظ˲ɫӰɫȡ ʹƫRrԓעʲô
        1) ʹƫRmӱƫRһãͬrƫzĤмUѽYzƷͬ͸ҲһͬԱҲһӣһfӵıs2-4
        2) עⲻҪ׌⾀ֱ䵽R^ϣl╞FʹÕrüڹ֡
        3) ʹÕrDRԫ@ѵЧ 4) ˹ԴĔzwĕrڹԴǰƫ壬R^ϼƫRƫ岻ڔzӰR^ϣƫRҲڹԴǰ@ߵΠСͬ ҲвԲܻá

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