Steering by automatic pilot and by magnetic compass in stead of automatic pilot, Measure the exactness of magnetic compass by qualified calibrator and provide compass adjustment card.

　
英 美
  • 自動(dòng)駕駛儀操舵和用磁羅經(jīng)代替自動(dòng)駕駛儀，通過(guò)合格的校準器來(lái)測定羅經(jīng)的正確功能并提供羅經(jīng)校正卡。
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