These are called "distortion products" and happen at multiples of the fundamental test tone.

这些称“畸变产品”并且发生在根本测试口气的倍数。

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In this test participants are briefly shown photographs that may be positive, negative or neutral in tone.

在这个实验中，实验参与者们短暂地看一些照片，这些照片的“格调”可能是积极的、消极的或者中性的。

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Methods the pure tone thresholds of 30 subjects (60 ears) were measured by pure tone audiometry and MCML was obtained by means of the same frequency tone masking test.

方法30例受试者(60耳)分别进行纯音测听，首先测出双耳的纯音听阈，然后应用同频音掩蔽试验测试各个频率的MCML。

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President Clinton, whose cynicism never loses its power to astonish, put on a long face and, with that tone of sincerity that betokens his tendentiousness, lamented that the Comprehensive Test Ban Treaty had become tangled in politics.

CENTERFORSECURITYPOLICY: Center for Security Policy | Politics and the Test Ban Treaty, By George F. Will, Newsweek, 20 October 1999