本文提出并建立了适合管材挤出主要性能指标的参数化数学模型、物理模型和有限元模型。
In this article, the parametrical mathematic model, physical model and finite model that adapted for the main performance indexes of pipe extrusion were developed.
中空纤维中空度是中空纤维物理性能的主要指标之一。
The hollowness is one of main physical indexes of hollow fiber.
介绍了双槽V BM平幅连续精练机的主要结构特点和操作要点，列举了织物经该机精练的有关物理特性和质量指标。
Describes the major structural and operational features of the Double-Trough Open-Width Continuous Scouring Machine VBM, as well as the physical property and quality index of the scoured fabric.
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