n.測距儀(測遠儀)
On a submarine there was no more precise rangefinder. 在潛艇中，沒有比他們更精確的測距儀了。
To ensure the accuracy and reliability of the laser rangefinder, it is necessary to calibrate it regularly. 摘要為保證激光測距儀的精度和可靠性，必須要對它進行定期檢定。
