Vertical control surveys?

高程控制测量?。

youdao

Therefore, studies one kind to suit in the large-scale bridge building construction high accuracy control surveys and constructs the survey method to be extremely essential.

为此，研究一种适合于大型桥梁工程建设的高精度控制测量及施工测量的方法非常必要。

youdao

The Centers for Disease Control and Prevention based the study on household telephone surveys in late 2007.

美国疾病预防控制中心的这次研究是建立在2007年年底的家庭电话调查的基础上。

youdao

The study was conducted by the National Center for Health Statistics, which as part of the Centers for Disease Control and Prevention regularly uses telephone surveys as a source of information about public health trends.

FORBES: The Young Aren't The Only Ones Going Wireless

Often in the lab, people control their facial expressions, and in written or verbal surveys, they answer politely rather than identifying how they really feel.

FORBES: Volkswagen Ad Gets Better the More You Watch It: Results from the Affectiva Smile Tracker