tractive coefficientとは 意味・読み方・使い方

The shellfish is regarded equivalent to sand transported by tractive force, and transport loss, discriminant coefficient for submerged sand, specific gravity of shellfish, and growth formula of shell length are added to the continuous formulas of amount of sand drift based on each particle size.例文帳に追加

貝は掃流移動する砂と同様とみなし、粒径毎の漂砂量式に移動低減率、潜砂判別係数、貝比重、殻長の成長式を付加した。 - 特許庁