spark plug hole 火花塞孔
pipe plug hole 管塞孔
drain plug hole 排放螺塞孔
washout plug hole flange 洗炉堵孔法兰
grease plug hole 黄油管塞孔
oil filler plug hole 加油器塞孔
Hole Plug Hole Plug 圆孔塞头
Plug hole coils 笔型点火线圈
bleed plug hole 排放塞孔
N-COUNT A plughole is a small hole in a bathtub or sink that allows the water to flow away and into which you can put a plug. (浴缸或水池的)放水孔 [英国英语]
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