Insulation with more uniform thickness of single layer may be extruded by using this cross-head without die adjustment.

使用时不必调节模具就能挤出具有较均匀的单边厚度的绝缘层。

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By adjusting the difference of refractive index of the double layer film, single mode operation can be realized with a certain waveguide thickness.

通过改变外延生长工艺来调节两层薄膜的折射率，可在一定波导的厚度范围内实现单模传输。

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The first optimum model is established with the target function of the frame's weight as well as with the design variables of the beam's single layer thickness.

首先以纵梁各部分单层厚度为设计变量，建立了以车架重量为目标函数的优化模型并进行了优化研究，取得了较好的优化效果。

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