Let's Discover the World of MachinesA reference book dealing with simple machines, machines in the home, transportation and power machines, and large machinery found on the farm, in construction, and in factories. |
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airplane axle back wheels battery belt Bicycles brakes tire burns Car makers car's carries chain clock clockwork coil of wire combine harvester complicated machine crops cylinder diesel engine drill drive machines electric motor escalator Factory robots farm machine farmers fuel gadget gasoline gear wheels grab excavator grain HAHR vihs tur heavy loads hedge trimmer inside invented jet engines jihn kind of engine kinds of machines krayn lathe lawn mower lift things look machine that cuts machine tool magnet mixer motorcycles muh SHEEN numbers office machine pedal picture above shows piston goes plow power stations POWERING MACHINES pruning shears pulleys pump pushed pyramids Raintree Publishers ramp robot rockets rollers rope Rudolf Diesel screw seesaw shape SIHL simple machine soil spins spiral Steam power Telex machine Today tower crane truck turbine turn the bit typewriter vacuum cleaner water wheel wedge wheels move wind windmill workers York