The first step toward understanding neural nets is to abstract from the biological neuron, and to focus on its character as a threshold logic unit (TLU).

理解神经网络的第一步是从对抽象生物神经开始，并把重点放在 阈值逻辑单元（TLU）这一特征上。

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The traditional method, in which a single threshold value(unit price) has been used to determine the transportation mode of corresponding cargo, lacks necessary support from practice.

用单一的临界值来决定不同类商品在国际贸易中运输模式的选择缺乏实践的支持。

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The load reacting unit (9) preferably comprises a fluid pressure unit and the indicator (60) comprises a mechanical indicator that operates at a predetermined pressure threshold.

负载反应单元(9)优选地包括流体压力单元，指示器(60)包括在预定压力阈值下操作的机械指示器。

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Bob Brindley, principal at consulting firm Advito, a unit of travel-management company BCD Travel, estimates that the average threshold for an upgrade is now eight hours better than the 10-hour minimum many companies set at the start of the downturn, but still less generous than the six-hour level seen a few years earlier.

WSJ: More Companies Treat Business Travel Like Budget Travel