bacteria free water的意思|示意

By studying bacteria that flourish in the oxygen-free water, scientists hope, among other things, to learn how simple life-forms can lead to more complex ones.

通过研究这些生活在无氧环境下细菌，科研人员希望了解这些简单的生物是如何进化成更为复杂的生物的。

The sterilization method of separating plant endophyte includes the following steps: 1. washing the host sample with endophyte to be separated with bacteria-free water in a bacteria-free work bench;

本发明公开了一种用于分离植物内生菌的消毒方法，包括以下步骤：1） 在无菌工作台内，将欲分离内生菌的宿主样品用无菌水清洗；

Laboratory studies show that Saluda Natural Spring Water contains several of the minerals necessary for good health and that it is completely free of bacteria.

实验室的研究显示Saluda自然泉水包含有益健康的几种矿物质且完全无菌。