Experiments have been done to measure the mechanical efficiency of the tube twister and to determine the main reason affecting the yarn twist and the twisting efficiency.
通过实验测得了加捻管的机械加捻撩效率，从而得出了影响纱线捻度和加捻效率的主要因素。
2
A general dynamic model and differential equations for an unsymmetrical projectile traveling in a flexible, increasing twist rifled bore gun tube are developed.
建立了非对称弹丸在挠性渐速膛线身管内的弹丸一般运动动力学模型和运动微分方程组。
3
Therefore it is main purpose for studying low twist rotor spun that increasing the twist and increasing the strength of yam of the zone from the rotor to guide tube.