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When the term in a State of vibration, twisted fatigue cracks that have occurred when the materials for welding

When the floor is at the vibration condition for a long time, causes the material to produce wearily has the crack to twist time may carry on welds makes up

When Taiwan's long-term in a vibration-oriented State, make material to produce a rift which occurred when fatigue and can be welded Supplement No.

When the term in a State of vibration, twisted fatigue cracks that have occurred when the materials for welding