它与电磁计程仪比较具有测量精度高；能够测量绝对航速、航程；能够测量船舶横向移动速度等优点。
With the electromagnetic Log compared with high accuracy, to measure absolute speed, range, to measure the ship horizontal speed advantages.
它与电磁计程仪比较具有测量精度高；能够测量绝对航速、航程；能够测量船舶横向移动速度等优点。
With the electromagnetic Log compared with high accuracy, to measure absolute speed, range, to measure the ship horizontal speed advantages.
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