thimbles

n.

（缝纫用的）顶针( thimble的名词复数 )；针箍；套筒；套管

Hand and finger thimbles
Combustor liner cooling thimbles and related method
Structure of Lefschetz thimbles in simple fermionic systems
Divergent cooling thimbles for combustor liners and related method
Hidden topological angles and Lefschetz thimbles
Some remarks on Lefschetz thimbles and complex Langevin dynamics
Lefschetz thimbles and stochastic quantisation: Complex actions in the complex plane
Hybrid Monte Carlo on Lefschetz thimbles — A study of the residual sign problem
Decoding perturbation theory using resurgence: Stokes phenomena, new saddle points and Lefschetz thimbles
1-Dimensional structures of poly(3,4-ethylenedioxythiophene)(PEDOT): a chemical route to tubes, rods, thimbles, and belts.