But as the city began random security scanning at middle and high schools yesterday in its latest effort to seize weapons, the gap between school rules and parents' expectations has set off a furor.

但是，当昨天该市开始在中学和高中进行保安随机抽检作为抓获这些“武器”的最后努力时，父母的期望和学校的规章之间的距离掀起轩然大波。

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PurposeThis study is the gypsum generation of gap stamp and the preparation body gap stamp scanning, through the computation analysis, tests and compares two kind of situations the grades of fit.

目的本研究是将石膏代型间隙印模和预备体间隙印模扫描后，通过计算分析，测试并比较两种情况的适合度。

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This paper introduces a special single board computer for measuring gap. The measurement is based on the principle of photoelectricity-scanning.

本文介绍一种利用光电扫描原理测量缝隙宽度的专用单板机。

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