适用于水电站铁路公路边坡大吨位预应力锚固孔排水孔的施工，以及预防滑坡岩石坍塌等地质灾害治理工程。
It is used to drill heavy duty pretension anchor holes at side slope of water power station, railway or highway projects, as well as drainage holes.
我们不说船的重量为多少千吨，而说船的排水量是多少吨位。
Instead of saying the ship's weight is so many thousand tons, we say its displacement is that many tons.
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