包缝作业后，线头能自动包回布边内，使缝制物品更美观，操作简便。
The thread tip can be overlocked into the cloth edge, which makes the stitch more elegant and the operation more simple.
伸缩缝由于铝合金温度变形较大，为使幕墙有足够的变形随动性，幕墙立柱需设置伸缩缝。
Expansion joints due to large aluminum alloy temperature deformation, to make the curtain wall has enough deformation servo, curtain wall pillar setting expansion joint.
针对不同回风方式进行模拟发现采用条缝回风方式使流场的均匀性以及人员的舒适性更好。
From the simulation for different wind-back modes, the mode with slotted outlet was better, in which the driver felt comfortable and the homogeneous degree of flow field was improved.
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