对于钻井作业时间长，废水产生量大的油田，已经形成一套成熟的处理方法和有效的处理设施。
For oil field which need a long time drilling operation and produced plenty of wastewater has become a mature approach and effective treatment equipment.
这些常规的控制测量手段工作量大，作业时间长，受气候、环境等条件影响显著，而且误差积累显著。
These conventional control survey method work loads very big, work time long, condition influence and so on the climate, environment is been remarkable, moreover the error accumulates remarkably.
广泛应用于震动幅度大、冲击频率高、作业时间长、环境恶劣的各类工程机械，压路机、挖掘机、矿山运输车辆等。
Be widely applied on various construction equipments with some features, big vibration and shock frequently, working long time, terrible environment machines, such as roller, grab, mine transporter.
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