单词sley
网络: 筘座；寸经
This effect would be absent if the sley dwelt during the period of shuttle flight.
如果梭子飞行期间筘座停顿，这种效果便不复存在了。
The motion of the sley, including its period of dwell, is positively controlled.
筘座的运动（包括停顿时间）被积极控制。