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A̎Č(du)ҪˮеđҸzwҸw^³;zwtzgo늉zwIJ\(yn)(dng)zˮõһķ(wn)ԣzwwܿȻȥ

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^(q)ͻ^(q)ɸɄЧ;ڶ^(q)ڻЧ@;^(q)ɶֻ΢߻Ч

ͨڶ^(q)͵^(q)֮gĻɞ^ѻ

1968ˌ(du)ԭˮzwȌ(du)ЧӰԇ(yn)Եо(dng)ԭˮzwmﺬ100-500ug/LÃ(ni)r(sh)SIJĂ(g)ͬą^(q)

1P(sh)(yn)xƷr(sh)׃ٔx

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(1)ȡ6(g)200mlˮ6(g)500mlbˮӵğڶr(sh)׃ٔx



(2)(j)Ĵ_(sh)(yn)мĻĄȡ25%1̖(ho)ļ200%6̖(ho)ļӻȵķ2̖(ho)-5̖(ho)Ļ

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