常见例句双语例句Properly thread the bobbin case.重新正确地穿梭壳的线。A new take-up device is adopted to re-shape the rotating hook shaft, the hook point and the bobbin case.旋梭轴肩、梭尖以及旋梭套的形状有所改变；采用了一种新的挑线装置。 返回 bobbin case