downhole instrument
... down time,停机时间 downhole instrument,下井仪器 downwarradiation,向下(全)辐射 ...
logging tool
... logging recorder测井记录仪 logging tool下井仪器 logic control逻辑控制 ...
downhole probe
... downhole probe 下井仪器 downhole processor 井底资料处理机 downhole pulser 井下脉冲发生器 ...
downhole tool
... down hole equipment井下工具 downhole tool下井仪器 downhole operation井下作业 ...