| 单词 | platen |
| 释义 | platen [`plat·ǝn] ENGINEERING 1. A flat plate against which something rests or is pressed. 2. The rubber-covered roller of a typewriter against which paper is pressed when struck by the typebars. MECHANICAL ENGINEERING A flat surface for exchanging heat in a boiler or heat exchanger which may have extended heat transfer surfaces. |
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