Runners training for a marathon can get a stress fracture if they. escalate their training too quickly. Stress fractures occur when too much weight or stress is put on a weakened bone. It's often the result of an imbalance in bone health caused by actions that outpace the body's natural bone rebuilding process. See Stress Fracture Risk Factors.
idf - Computer Definition. A distribution frame that serves as an intermediate point of inside cable and wire interconnection between the main distribution frame (MDF) and the terminal blocks or terminal outlets. See also MDF.
It stannds for medium-density fiberboardand it is a type of wood Medium-density fiberboard (MDF) refers to a type of manufactured composite board used to make furniture, dooâ¦rs, flooring and walls. The making of MDF began in the United States in 1966, according to the University of Tennessee.