常見例句雙語例句When the nut is screwed to the valve threads, it pulls the nipple into the valve outlet compressing the washer between the two beads.當螺母擰到閥門螺紋上時,它把管接口推進閥門排氣口,壓縮在兩個墊珠之間的墊圈。www.airproducts.com.cn 返回 screwed nipple