兼性

Coliform group referred to aerobic or facultative anaerobic gram-negative budless bacillus which could ferment lactose and produce acids and CO2.

大肠群指能发酵乳糖、产酸产气、需氧和兼性氧的革兰氏阴性无。

However, Bacillus licheniformis was aerotolerant anaerobe, in a shape of ellipse and swelled in the middle with production of Arginine hydrolase.

地衣兼性氧，椭圆形中间膨大，能产生精氨酸双水解酶。