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。

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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。

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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.

因此增加转杯至引纱管区域的捻度，提高该纱段的成纱强力是低捻转杯纺纱的主要关键。

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Many problems that once required sawing through the breastbone and opening up the chest for open heart surgery now can be treated with a nip, twist or patch through a tube.

NPR: Heart Repair Breakthroughs Replace Surgeon's Knife