| 摘要 |
The duct for reducing ignition noise generated from a small ignition chamber, comprises secondary glass-fiber plate (29) having a plurality of slots (30) at the bottom; primary glass-fiber plate (26) having exhaust outlet (27) on the upper side; free space (31) between the two plates (26),(29). A fine-meshed wire net is attached on the primary and secondary plates (26)(29) in order to fix the glass-fiber plate.
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