In the case of no control point, we can use localization function and line stake function of RTK technique in transmission line final location survey.
在没有控制点的情况下，利用rtk技术提供的在任意点上地方化功能和线放样功能进行线路终勘定位。
The prevalence survey of hyperlipidemia and its case control study on risk factors were carried out in 903 middle or old person.
对903名中老年人群进行高脂血症的现况调查和危险因素的病例对照研究。
Methods Prevalence survey and case-control study on risk factors was conducted.
方法采用现况调查和危险因素病例对照研究法进行研究。
应用推荐