织布机上的一种机件，经线从筘齿间通过，它的作用是把纬线推到织口。
筘座的运动(包括停顿时间)被积极控制。
The motion of the sley, including its period of dwell, is positively controlled.
如果梭子飞行期间筘座停顿，这种效果便不复存在了。
This effect would be absent if the sley dwelt during the period of shuttle flight.
列举了几种织物常用布边的设计方法及边经穿综、入筘方法。
Selvage design method and side warp drafting & reed-in methods of several fabric normal selvage are enumerated.
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