screwed nipple
常見例句
- When the nut is screwed to the valve threads, it pulls the nipple into the valve outlet compressing the washer between the two beads.
當(dāng)螺母擰到閥門螺紋上時(shí)，它把管接口推進(jìn)閥門排氣口，壓縮在兩個(gè)墊珠之間的墊圈。
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