However, they can provide significant value when the unit tester executes the test using a stubbed-out, black box approach.
然而，它们可以在单元测试人员利用局部的黑盒方法执行测试时提供有意义的价值。
Taking chrome black t (t) as main material, a new prescription of trace hardness indicating agent has been screened out through orthogonal test.
以铬黑t (T)为主要原料，通过正交试验，筛选出微量硬度指示剂的新配方。
This station has carried out the black startup test on No. 3 generating unit.
该电厂对3号机组进行了黑启动试验。
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