本文分析了异型(圆环型与矩形的组合)材成型时塑料熔体在模头中的流动机理，并给出了模口成型长度的设计方法。
While profile, the cross section was composed of annulus and rectangle, was extruded, the flow mechanism the plastic melt in the die was analyzed and the design method of die land was given.
着重探讨了碳纤维长度与掺量、水灰比、龄期及成型工艺对碳纤维增强水泥基复合材料导电性的影响。
Influence of length and amount of carbon fiber, water cement ratio, curing age and moulding technology on electrical resistivity of carbon fiber cement composite were discussed experimentally.
分析了火炮身管大缠角混合膛线的成型过程，提出圆锥体单边切进楔形工作齿的阴极结构，经试验确定了阴极体锥度、长度与楔形工作齿角度的匹配关系。
This article focuses on the process of shaping the mixed rifle with a large spiral angle in the cannon, and proposes a cone-like cathode structure with asymmetric cuneiform working tooth.
并且给出了成型皮带长度和皮带拉力的计算公式。
And the formulas for the length and working forces of the drive belt have been given.
结果表明，不同长度的吸阻测试单元对测定普通成型纸滤棒的吸阻无明显的影响。
The experimental results showed that the PD test cells have no influenced on PDs of common filter rods.
结果表明，不同长度的吸阻测试单元对测定普通成型纸滤棒的吸阻无明显的影响。
The experimental results showed that the PD test cells have no influenced on PDs of common filter rods.
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