Level surveying datum point 水准测量基准点
Accuracy level surveying 精确水准测量
center line level surveying 中平测量
The influence of atmosphere on the groundwater level surveying quality is great.
气体对地下水位观测质量的影响是比较严重。
According to exchange rate reasonable balanced level surveying, the RMB revalues 2% to US dollar today, namely 1 US dollar exchanges 8.11 Yuan.
根据对汇率合理均衡水平的测算，人民币对美元即日升值2%，即1美元兑8.11元人民币。
At the national level it is easy enough, though expensive, to account for this by surveying CPOs and including them in the sample in proportion to their share of the population.
尽管昂贵，但从国家水平来看，民意调查如按CPOs在总人口中所占的比例计算，调查就会很容易。
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