求译Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M
问题描述：
求译Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M
Drug dilutions with 2- or 2.5-fold steps ranging from 10-4 to 10-7 M were made in 1-ml volumes of broth
答
你抄的句子可能有误：
10-4 to 10-7 M
实际是
10的-4次方 到 10的-7次方 摩尔浓度
药物以broth液加倍或2.5倍逐步递增稀释到覆盖10的-4次方 到 10的-7次方 摩尔浓度,每个浓度1毫升体积.