Je was op zoek naar: does wear and forth exist (Spaans - Engels)

back and forth
back and forth

worked back and forth in 2 pieces.
worked back and forth.

surface engineering processes are used to minimize wear and extend working life of material.
surface engineering and treatments are used to minimize wear and extend the components working life.

when activated, instead of rotating the crankshaft the starter used the generator coils on the shaft to rock it back and forth under the control of cams on the crankshaft.
when activated, instead of rotating the crankshaft the starter used the generator coils on the shaft to rock it back and forth under the control of cams on the crankshaft.

exceden y no están alcanzados (o estan mas alla) del concepto/significado de wear and tear
above and beyond

wood relates it to an indo-european root *"kweu-" or *"qeu-", relating to a variety of back and forth motions.
wood relates it to an indo-european root *"kweu-" or *"qeu-", relating to a variety of back and forth motions.