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。

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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。

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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。

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Thus far, for us it's been testing individual functions. Later in the term we'll talk about unit testing of classes.

至今为止，我们用到单元测试的地方,就是测试每个单独的方法,在后面我们会讲到类的单元测试。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I end up going back and doing unit testing anyway, to try and figure out why it doesn't work. So over the years, I've just convinced myself I might as well start where I'm going to end up.

第一次从来不会正常运行,因此无论如何我还要回头去做单元测试,找找哪儿出错了，因此经过这么多年，我已经说服自己既然一定要做单元测试,那么还是一开始就做最好了。

麻省理工公开课 - 计算机科学及编程导论课程节选

There's unit testing, where we validate each piece of the program independently.

一种是单元测试，也就是,分别验证程序中的每一个独立部分。

麻省理工公开课 - 计算机科学及编程导论课程节选

Verinata, Illumina's testing unit, incorrectly cleared a New York woman's fetus of Down syndrome, according to the case report presented at a medical society meeting last month.

WSJ: New Questions on Cutting-Edge Prenatal Tests

All ended up seriously ill, with multiple organ failure, soon after being injected with the drug at a special testing unit at Northwick Park Hospital in London, run by a company called Parexel.

ECONOMIST: Why a drug trial went so badly wrong

However, the council felt it was "appropriate" for it to test meals from a number of schools in the county as it was among only a small number of local authorities with its own specialist testing unit.

BBC: Worcestershire County Council Scientific Services