回收次品盐酸浓度达31%。

The concentration of hydrogen chloride could reach 31%.

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肌注后30 ~ 60分钟妥布霉素平均血药浓度达最高值。

Mean peek serum concentrations of tobramycin occur between 30 and about 60 minutes after intramuscular administration.

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那些接受酒精的人的平均的血液酒精浓度达12%，高于法律酒后驾驶规定的0.8%。

Those receiving alcohol attained an average blood alcohol level of.12 grams percent, higher than the legal 0.8 per se for driving under the influence.

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