cheukjeongseon
log line
ligne de mesure ; ligne de relevé ; ligne de contrôle
측정선을 사용하여 정확한 데이터를 얻을 수 있습니다.
cheugjeongseon-eul sayonghayeo jeonghwaghan deiteoreul eodeul su itsseumnida.
You can obtain accurate data using the log line.
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