ղСվ
ҳ
С
п
߿
ɽ̴ѧ
Ӣѧϰ
Ա
ʦѧ
百度安全验证
ز鿴
Wordĵصַ
ļ.docΪ.docĶ
Ȥζʵ
س滮20122030
ͳ - ͬôѧڶϰ
ʮ塱صĿ-ľܸϲĿҵƻ
ͳƵϰ⼯
ʷϰ
Сѧϡ2018ѧ һ Ǻ 1.5 y=Asin(
ʦСѧѧ꼶(²)֪ʶ㼰ϰ
ͳѧϰ⼯
˸ӷ..
Ͽѧ-ʽ.