The background current, the dc electric conductivity and the apparent dielectric constant of KLiSO4 single crystal exhibit sharp peaks besides jump nearby the transition temperature.

在相变温度附近，本底电流、直流电导率和表观介电常数除发生跃变外还出现一个尖锐的小峰。

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Background Current estimates of the costs of cancer care in the United States are based on data from 2003 and earlier.

目前美国肿瘤医疗费用的预测都基于2003年以前的数据。

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By studying related background, current research work and theories, problems of the current component retrieval method based on faceted classification schema are pointed out.

本文通过对构件分类模式与检索技术的背景、研究现状及相关理论的学习，指出了目前基于刻面分类模式的构件检索方法中存在的问题。

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And even if pupils are not taught about recent history, Mr Lang says that at least teachers should be aware of the background to current affairs and that training should be available.

BBC: Afghan bombsite

Froman talked about how the current background check system was broken, noting that an "instant check" in Colorado can actually take about 10 days.

CNN: Gun debate: Where is the middle ground?

However, NRA chief executive Wayne LaPierre told the panel that the current background check system doesn't work, so expanding it would only create an unmanageable government bureaucracy instead of reducing gun crime.

CNN: Obama still backs new gun ban; top senator less certain