| 释义 |
bright spot
bright spotA positive occurrence in an otherwise sad or negative situation. His granddaughter coming to visit him in the nursing home was always a bright spot in Jim's day.See also: bright, spota/the ˈbright spot a good or pleasant part of something that is unpleasant or bad in all other ways: The win last week was the only bright spot in their last ten games.See also: bright, spotBright Spot
Bright Spot a defect on the surface of hot-worked steel that has been cut (mainly steels with medium carbon content). Bright spots appear as light-colored strips parallel to the flow of the metal in pressure treatment. The length of the spots varies from several mm to several cm and the width from fractions of a mm to 2–3 mm. Bright spots are formed primarily in poorly deoxidized steel and in steel with a high content of nonmetallic inclusions. They are not permitted in products that must operate under demanding conditions. |