Because the time frequency laboratory will be gradually improved by auto-measurement, we give the related concept and technology of virtual instrumentation.
针对时间频率实验室将逐步实现自动化测试的目标，应用了虚拟仪器的相关概念和技术。
2
Normal reference laboratory ranges are not provided here, asthese may vary depending upon the type of instrumentation and reagents used.
正常的实验室参考范围并没有包括在这指南里面，因为这些会根据不同的仪器和试剂而变化。
3
A more in-depth discussion of commercially available time and frequency measurement equipment and standards, and how such instrumentation can be used in the metrology laboratory.