Capacity constrain is always an important study content in traffic assignment and an essential cause of congested link and network.

容量限制一直是交通分配研究的重要内容，是造成路段和路网拥挤的根本原因。

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Most traditional algorithms are constrained by many aspects of practice, such as data type, real-life significance and so on, which probably constrain the capacity of knowledge acquisition seriously.

传统关联规则挖掘算法往往受到数据类型、关联规则的实际意义等约束，大大限制了知识获取的能力。

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There is still reason for alarm due to the nation's demographics and low tax revenue which will constrain capacity for debt absorption, create increasing cash outflows and create future concerns about market instability.

FORBES: Japan: Land Of The Rising Sum

The lack of an appropriate and modern regulatory regime and resolution authority helped cause this crisis, and it will continue to constrain our capacity to address future crises until we put in place fundamental reforms.

WSJ: Geithner: My Plan for Bad Bank Assets

It is unclear, though, that Sweden's supply-side revolution can be replicated without letting private firms run state-funded schools, as that country does. (The Tories have decided that allowing schools to make profits from taxpayers would be a bad headline too far.) With public finances likely to be tight for years to come, this decision may constrain new capacity, since non-profit schools cannot finance start-up costs by borrowing against future income.

ECONOMIST: The Conservatives on education