再由地面仪器对PCM信号进行解码，得到所需的测井数据。
The surface system decodes PCM signals and gets logging data.
该技术主要仪器为声纳测距仪，它包括地面仪器、井下仪器及各种辅助设备。
It is mainly composed of sonar range finder which includes comprehensively surface instrument, subsurface equipment and different kinds of accessory.
他们正使用地面仪器以及绕轨道运行的仪器如哈勃太空望远镜和斯皮策太空望远镜检查这些候选恒星。
They're checking out the candidates with ground-based instruments as well as orbiting assets like the Hubble Space Telescope and the Spitzer Space Telescope.
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