词汇	cultivated layer
释义	cultivated layer 耕层
随便看	frictional heat generation frictional heating frictional-heating frictional heat source frictional hoisting frictional hoop frictional horse power frictional horse-power frictional ignition frictional impact frictional impact oscillator frictional index frictional inflation frictional influence frictional interface frictional joint with high-strength bolts frictional lashing method frictional layer frictional let-off motion frictional lichenoid eruption frictional liquidity surplus frictional loading frictionalloss frictional loss friction al loss