The emergence of electronic level is a great technique change of level survey.

电子水准仪的出现是水准测量技术一次大的变革。

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Use level survey to mark the paving design elevation of the cement stabilized macadam with obvious mark on indication piles both sides.

利用水准测量，在两侧指示桩上用明显标记标出，水泥稳定碎石的铺筑设计标高。

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Although close textual reading and interpretation is part of social science tradition, it is often not possible, especially for introductory and intermediate level survey courses.

虽然仔细的阅读并诠释文本是社会科学的传统之一，却通常难以实践，特别是在导论或中等程度的概论课程中。

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Crime Prevention Minister Jeremy Browne said crime was continuing to fall and was now at the lowest level since the survey began.

BBC: Fall in crime in England and Wales 'may be exaggerated'

On the state level a July survey by the National Conference of State Legislatures found 20 had already passed laws this year affecting employment of illegals, up from 8 states in 2006.

FORBES: Who's Gonna Do the Work?

That is the lowest level recorded since the survey was launched in 1992.

BBC: Business confidence 'hits new low', says survey