同时讨论了双向拉伸管的成型方法。
The equipment for making biaxially oriented pipes is mainly discussed.
碳纳米管被喷洒在硅酮上时是随意分布的，但当它被拉伸的时候，纳米管会顺着拉伸物体排列成线型。
When the carbon nanotubes are sprayed onto silicone, the substance lands randomly, but when stretched out, the nanotubes form into lines across the substance.
由拉伸和疲劳试验，测定了冷凝器用钛螺纹槽冷却管的力学参数；
The mechanical parameters of the cooling tube with spiral flute were measured by the tension and fatigue tests.
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