Footage from Xinfa village showed rescuers trying to traverse a 35-metre deep ravine using a cable line.
从新发村传来的电视画面显示，救援人员试图利用电缆线跨越一条35米深的峡谷。
A method of route surveys from traverse stations, without need of center line, is put forward. It demontrates high efficency in practice.
提出一种在导线点上直接放样路线边桩，而无需放样路线中桩的方法，它在生产实践中有很好的效果。
The surveyor using RTK can perform corner search within a meter or a couple of centimeters of the true location without the need to traverse down the line.
验船师利用rtk技术能在一个角落里寻找米或几个厘米的真实位置，而无需周游了线。
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