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ˮ̎SĵԴҪ늡ȼϼˎȝԴ늺ռܺĵ60%90%ܵҪˮ̎ĹƄӻϡķ(wn)̎ÙCеO(sh)ܺٽS^(q)ȷ桢ˮ̎^̵늺ĴsռȫS늵 70%̎늺ռ 20%S^(q)k 10%ˮSܵҪӟἰS^(q)һӟğռȫSĵ 60%ؼӟռ 30%S(ni)ռ 10%
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