The surveying is a technical basic course with strong practicality, and the survey experiment is an indispensable link of the teaching of the surveying.

测量学是一门实践性很强的技术基础课，测量实验是测量学教学中不可缺少的环节。

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In an experiment, 40 subjects had to pick and rank 10 of 30 CDs that they would like to own as if they were completing a consumer survey.

在一项实验中，40个实验对象被要求像完成消费者调查一样，从30张CD里挑出10张他们希望拥有的并为其排名次。

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But the latest stats on virtual worlds offer another huge incentive to experiment, perhaps with more tempered expectations. The survey stats, from Lightspeed Research...

不过最近的数据显示，虚拟世界提供了l另一个巨大的试验诱惑，也许更符合产业的期望。

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They also failed to pick the cheapest fund, and in a survey after the experiment listed fees as the fifth most important factor in making their decision, behind performance.

WSJ: Upside: Don't Pay High Fees for Index Funds

Forty of the 50 largest airlines say they will experiment with NFC technology in the next two years, according to a January 2012 survey by SITA, or Societe Internationale de Telecommunications Aeronautiques.

BBC: Seven innovations in air travel