IUT

The original test theory for the communication protocol test models the implementation under test ( IUT) as a black box.

原有通信协议测试理论将被测实现作为黑盒，使得大量可增强控制观察能力的手段无法利用。

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Passive testing is done by passively observing the inputs and outputs of the IUT without interrupting the normal operation of the networks, which is especially applicable to locating the system faults of running networks.

被动测试被动观察被测系统的输入输出，无须干扰网络设备的正常运行，适用于运行中网络的故障检查和定位。

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If even for one or two times, iut would've been good to see the Lakers make the Celtics react to them, rather than the Lakers reacting to an otherwise still Celtic defense.

然而湖人没有这么做，所以湖人整场在凯尔特人一成不变的防守模式中也无所事事。

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The methods of IUT ( in utero therapy) have developed greatly in the last few years, it has reduced the harm of vicious fetus that to the society and family as maximum as possible.

胎儿宫内治疗的方法取得了长足的发展，最大限度地减轻了不良胎儿对社会、家庭造成的危害。

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Although the safety still noticeable, the system theory and the ethics provide good instructions for us to make use of the IUT correctly and properly.

但其安全性问题依旧突出，而哲学的系统观及伦理学为我们恰当合理运用胎儿宫内治疗提供了很好的指导。

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Observability is the capability of the test system to observe the output of the IUT and to determine which input triggers the particular output.

可观察性是指测试系统观察IUT的输出、判断输入与输出对应关系的能力。

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Controllability is the capability of the test system to force the Implementation Under Test ( IUT) to receive inputs in a given order.

可控性是指测试系统控制被测实现（IUT）按照一定顺序接收输入的能力。

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