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.
EXT - 70挤出机是生产地震炮线、检波器组合软电缆的专用设备。
EXT-70 extruder is a special device used to produce explosive wire for seismic explanation and pigtail for geophone array.
地震检波器由长长的电缆连结到放大器和接收装置上，而放大器和接收装置则被放置在一辆专门设计的卡车上。
The geophones are connected by long cables to the amplifiers and recording equipment which are often placed in a specially-designed truck. The vibrations received by the geophones are recorded.
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