英语语法分析

Listeria species in environmental samples from the food plant were detected by 3m Petrifilm by identifying the 210 typical colonies and 70 nontypical colonies from 112 environmental samples.

共采集112个环境样本，挑取了210个典型菌落，70个非典型菌落进行鉴定，评估3 M测试片对食品加工环境中李斯特菌的检测能力。