Obturator ring
Obturator rings are a specific type of piston ring used in World War I aero engines to compensate for warping of the cylinders.
| 单词 | Obturator ring |
| 释义 |
Obturator ring
英语百科
Obturator ringObturator rings are a specific type of piston ring used in World War I aero engines to compensate for warping of the cylinders. |
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