摩ま擦さつ抵てい抗こう

noun

frictional resistance; frictional drag

Physics term for the resistance force caused by friction, often in fluid dynamics or surface contact contexts.

• 船ふねの摩ま擦さつ抵てい抗こうを減へらすために船せん底ていを滑なめらかにする。

  The ship's bottom is made smooth to reduce frictional resistance.