warp let off的用法和样例：
例句
- The warp let...off motion allows the feeding of warp yarn under uniform tension and at the proper rate.
送经机构可以使送出的经纱保持均匀的张力并保证准确有送经量。 - The experiments of beating-up proved that the ELO and ETU control system runs stably and responds quickly, and that the warp tension is uniform and constant.
多次打纬试验证明，该电子送经和电子卷取控制系统运行稳定，响应速度较快，经纱张力恒定。
