1·Single crystal of spectinomycin dihydrochloride was cultivated by natural cooling method according to its characteristic of solubility.
根据盐酸大观霉素的溶解度特性，采用自然冷却法培养出单晶。
2·Minimum inhibitory concentrations (MICs) of penicillin, ceftriaxone, tetracycline, ciprofloxacin and spectinomycin were determined by an AGAR plate dilution method.
采用琼脂稀释法测定青霉素、四环素、环丙沙星、大观霉素和头孢曲松对淋球菌的最小抑菌浓度(mic)。