Methods: Doubleratio dilution method by physiological saline was applied to different type of Vibrio cholera, and their growth on gentamicin AGAR plate was observed.
方法：采用稀释法用生理盐水将不同型别的霍乱弧菌进行倍比稀释，观察其在庆大霉素琼脂平皿上的生长情况。
2
All told, Banks across the 17-country euro area average 26-1 leverage - double the ratio in the United States.
总计，欧元区17国银行业的平均杠杆比率为26 - 1——是美国的两倍。
3
Leverage is being squeezed out of real estate by increased bank reserve ratio requirements (which are almost double those of Banks like Citigroup (BAC - news - people)) and by limits on mortgages.