The antibiotic spectra of Ko-p 77 and Kp 958-4 were similar to the Rf-values in the six solvent systems used.是什么意思_The antibiotic spectra of Ko-p 77 and Kp 958-4 were similar to the Rf-values in the six solvent systems used.在线翻译_英语_读音_用法_例句