rackwork

n.

齿条，齿条加工，齿条机构；

Single rackwork slide: watermill in summer
Protection for rackwork of ferry-slips
Toy single rackwork slide: windmill
Single rackwork lantern slide: volcano erupting
Double rackwork slide: chromatrope
Single rackwork magic lantern slide: three horse's heads which turn into three men's heads
Single rackwork slide: Mount Vesuvius in flames
Single Rackwork Lantern Slide: Chromatrope
Dell stellt neue Rack-Workstation für die Arbeit unter schwierigen Umweltbedingungen vor
Pallet stacking racks work anywhere