洁净、无灰尘、无污点、无油渍，以客户验收、签字为标准。

Clean, no dust, without stain, without oily be soiled, customer acceptance, signed for the standard.

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出厂验收测试(factory acceptance tests, FATs)和客户验收测试(customer acceptance tests, CATs)。

Factory acceptance tests (FATs) and customer acceptance tests (CATs).

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通常情况下，客户需要来自开发团队的某些帮助来编写验收测试。

Typically, customers will need some help from the development team to write acceptance tests.

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