For laboratory-scale testing, a limited number of trials (e.g. six trials each of three treatment technologies) should be sufficient to support the selection and design of technologies for the field tests.
7. 对于实验室规模的测试，少量的试验(例如对三种处理技术的每一种进行6次试验)就应足以支持选择和设计实地试验技术的工作。