model simulation computer simulation M-theory stochastic process Copernican system mean sun Ptolemaic system possibility string theory hypothesis theory theoretical account

structure fabric

fender cornice hayrig buffer rack sash tambour clotheshorse embroidery hoop window mount framing grate grille pergola bower latticework stretcher window sash brace oxbow sawhorse grillwork arbor airframe Zimmer frame grating go-cart tenter doorframe coaming supporting structure arbour gauntry picture frame climbing frame cowcatcher buck undercarriage hayrack derrick frame sawbuck bustle casing valance doorcase fretwork ribbing truss baby-walker deckle pelmet walker grill honeycomb bracing gantry handbarrow pilot embroidery frame gun carriage lattice case valance board backing mounting horse Zimmer window frame wattle stocks