Objective To optimize the extraction processes for ferulic acid from Ligusticum chuanxiong Hort.目的研究川芎中阿魏酸提取的最佳工艺条件.Objective : To investigate the correlation between entophytic fungal habitations and varieties of Ligust...
When your exhaust falls off, you have to replace it.如果你的排气管脱落，应将其更换。There are many sources of air pollution; exhaust fumes, for example.空气污染有许多来源, 例如废气。the exhaust fumes that are polluting our cities污染我们城市的废气Exhaust fume...