Thus, testing unit root in seasonal time series is necessary.
这样对季节性时间序列进行单位根检验是很必要的。
In this paper, the design and test of the thin slab casting testing unit built in Lanzhou Steel Plant is introduced.
本文介绍建立在兰州钢厂的薄板坯连铸试验机组的设计和试验情况，对机组构成及其性能参数、设计特点作了较详细地叙述。
Before getting started on the experiment, Andrew has to first check his cholesterol level with a mobile cholesterol testing unit.
在做这个试验之前，安德鲁必须先用便携式胆固醇测量仪测量一下他的胆固醇水平。
By introducing the structure and function of testing unit, this paper makes user understand the theory of the system further, and provides guidance to the operation and maintenance.
通过介绍测试装置的组成和功能，让使用者从理论上进一步了解该系统，以指导该装置操作和维护工作。
This is where another method of testing, unit testing, comes into play.
这时，我们需要使用另一种测试方法，那就是单元测试。
XP USES two types of testing: unit and functional.
XP使用两种测试：单元测试和功能测试。
RUP acknowledges four levels of testing: unit testing, integration testing, system testing, and acceptance testing.
RUP确定了四级测试：单元测试、集成测试、系统测试和验收测试。
RUP acknowledges four levels of testing: unit testing, integration testing, system testing, and acceptance testing.
RUP确定了四级测试：单元测试、集成测试、系统测试和验收测试。
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