- echho altimeter
- 回声: echo; bounce back; reverbera ...
- 测高计: holometer; height finder; he ...
- 回声测高仪: echo altimeter
- 测高计: holometer; height finder; height gauge; aerohypsometer; altigraph; altimeter; altitude gauge◇测高计调整 altimeter setting
- 测高计，高差计: cathetometer
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