ring header 集电环 ; 环状集管
The assemble process of Conduit and Seat Ring belong to cylinder header will do an important influence on the whole motor power performance.
发动机缸盖进排气孔的导管和座圈装配质量直接影响整机动力性能。
A multitude of ring-shaped cracks and three water leakage points were discovered in the right side lower header of a boiler together with a cave-in of the boiler roof water-cooled wall.
锅炉右下集箱产生了很多环状裂纹和三个渗水点，同时顶棚水冷壁管塌陷。
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