| 摘要 |
A cylindrical heat pipe. The heat pipe includes a hollow body, a cover, and a tube. The hollow body includes a sealed bottom, a top portion and an inner wall. The cover includes an elevated portion near the top portion. The tube penetrates the cover. The cover seals the hollow body and guides working fluid passing therethrough into the heat pipe. After working fluid is added and vacuums, the tube is sealed, thus the elevated portion enlarges heat-dissipation region of the heat pipe.
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