skin friction
Technical term in geotechnical or civil engineering referring to frictional resistance along the surface of a pile or similar structure.
See also: 周面
Design taking into account the skin friction of the pile.
周面 means 'peripheral surface' or 'circumferential surface'; 周面摩擦 specifically refers to the friction on that surface.
pile shaft friction
Compound of 周面 (peripheral surface) and 摩擦 (friction).