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ֻѼڳʽʼǰĶЭ鲢ȷϡԱѲֻݸֳ˪עЭ鸽ҳĶ
93 3023 ˿ⷨ
ֳ˪ֻԹԱл߳š
ŶӵСǾŻ̳ԱߵţСֻڳԱͲһıܱ
ֳ˪ذѱܱݸֳ˪
ȷʵ˹ͶƱֳ֡˪һڱڣɢеȣⲻ
dz̲ȫ̽35죬ȡ̭ƣȡ÷ߵǰ1000һָ
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1.̴֣źڲĿԾ绻֡
Դ=λx10
Ǿ=λx100
˵=λx1000
벽㾳֣貶ֱͷּɣ=λx10000
עδ¼x2
2.ʳĻ֣ڴźСϲɼʳϡжȻ֡
ע𣬲ɼʳֱר˼Ʒ֡