(1/2)ҳ
ôʣһԵչṤԱ漴ǰܣڿѡǵĹȥϢһ£ҲͬڳݲιһȦ
˾չλ6ŹݣҲֱӹȥ
ڰֵˣϢˣֱȥתһȦɡΣҪһߡ
ĻҡҡͷȥɣѾתˡһȥǵչλ㣬οŪ˲СĶһ˵ǻװûչʾСӿɵҺúÿһۡ
û⣬չ˵Цˣ漴չת
һԵչԱҲһһ·ϳ캽չμӹҺ͵50չ̽900ңչ10ƽףչ50ƽףװ̬ʾ11ƽףչĹͷɻ180ܡο18꺽չݣ
⣬չỹ
Ȼרҵգչι۵˺ܶ࣬ܶװǰ涼ۼ˴ԱЩ⣬һЩרҵŶءЩŶҲǸչĶÿһͲչ̵쵼רҵԱȥĽ
ÿһطȻڶڵһӭһкһֻأҲĺʹҴкȻרĵȡרҵԱĽܣ֮ǰЩ˽˺Ӱ
ԽĹϣԽҪֵĺƣܲϲֱΧ۵ĸоDZ뱣Цġ
ŶԱʱ֣ܳÿطͣʱιгСʱ
繤Աչģǰʮ֡кܶҶװչʾֳкܶ˾ϲװ
һȽĹװ˴ýߣרҵŶԼȺ
ҲɵıЩװȻǰϸIJιЩչԱܶͨι۹û̫ģƲͬҶ֪Ƽҵĸˣĸˡ
ÿһЩչ̵ĹԱʮּĵİһЩչλϵҵҲԳ棬Ľ
Ҳ˺ЩרҵһĴԵһЩװϣתһҲ˴רҵιԱĽĿ⡣
Ȼ
(1/2)ҳ,һҳĶ
ǩĶ