biochemical action

基本解释

The chemical composition of the gas indicates that it was formed by biochemical action in the early stage of diagenesis.
天然气化学成分表明，其为成岩作用早期生物化学作用所形成。
The combination of biochemical action with physicochemical action in deep purification will remove not only suspended particulate efficiently but also soluble organic matters.
深度净化中将物化与生化作用相结合，不但能有效地去除悬浮颗粒，而且能进一步去除溶解性有机物。
The siliceous rocks of the lower Mantou formation were resulted from the biochemical action during the sedimentary period and formed in the environment of low-tide shallow sea.
结果表明，镘头组下部的硅质层是同生期生物化学作用成因的，形成于潮下低能浅水环境；

生化作用
The removal mechanism mostly lies on biochemical action, followed by physiochemical action of membrane.
其去除机理以生化作用为主,以膜的物化作用为辅。
生物化学作用