用于地震勘探电缆接收道的数字检波器，其性能已有了很大提升。
The performance of the digital detector used in cable receive channel has been improved obviously.
是绳罐道矿井安全高效提升的首选装备。
It is the preferred equipment of the cage path rope well for safety efficient hoisting.
是绳罐道矿井安全高效提升的首选装备。
It is the preferred equipment of the cage path rope well for safety efficient hoisting.
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