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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The invention discloses a system and a method for dotting level survey dots of wings and a vertical tail of an airplane.

本发明公开了一种飞机机翼、垂尾水平测量点的打制系统及方法。

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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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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