flat knot

n.

平结；

Equilibrium shapes of flat knots
The half-hitch knot: a rational alternative to the square knot.
Mechanical performance of square knots and sliding knots in surgery: comparative study.
The Arthroscopic Square Knot: A Biomechanical Comparison With Open and Arthroscopic Knots
Effect of knots on the flatwise bending stiffness of lumber members
Tensile strength of a surgeon’s or a square knot
Loose, Flat Knots in Collapsed Polymers
Flat square knots: are 3 throws enough?
Alexander polynomials of non-locally-flat knots
Beyond the square knot: a novel knotting technique for surgical use