| 单词 | Mercer engine |
| 释义 | Mercer engine [`mǝr·sǝr ´en·jǝn] MECHANICAL ENGINEERING A revolving-block engine in which two opposing pistons operate in a single cylinder with two rollers attached to each piston; intake ports are uncovered when the pistons are closest together, and exhaust ports are uncovered when they are farthest apart. |
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