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(english) The tool used to spot (or position) the rail cars for unloading. It is located on the north end of the unloading area.
(english) A material or structure is said to behave elastically if it returns to its original geometry upon unloading.
(english) A force-displacement relationship which is both linear and elastic. For a structure, this means the deformation is proportional to the loading, and deformations disappear on unloading. For a material, the concept is the same except strain substitutes for deformation, and stress substitutes for load.
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