APPd

һ pd

̫ƽ܇W(wng) > ˹x > ˹1.6xφ}

˹1.6xφ}

1 2

˹

Ʒƣ

܇ͣ ˹

ٷr(ji) o(bo)r(ji)

܇ģDƬ

˹x}

ʾ

_

֮ܲ鿴܇ҵĺ܇тĻ؏(f)Ŷ

Ҫᆖ