Ladder-type filter

Analysis of Slope Plane Position of Trapezoid Leaf of Tapered Leaf Springs;

变截面钢板弹簧梯形叶片的斜面位置分析

The paper introduces a modified trapezoid acceleration pattern with a constant speed part for loomrapier motion driven by cam.

本文提出了一种带有等速运动的改进梯形加速运动规律,用于凸轮传动的剑杆运动。

The critical water depth of open channels with trapezoid cross sections and smooth slopes is calculated with a weighted approximation method.

用两步加权迭代法计算小底坡梯形明渠的临界水深，计算简便，而精度很高：迭代两步所得结果的相对误差为１０－５数量级，迭代三步为１０－６数量级，适用范围也较宽，能满足一般水利工程的需要。

Study of supporting characteristics of arc terrace metallic support in roadway;

拱梯形金属支架的承载能力分析

In order to meet the varied requirement of roadway support,the metallic arc-terrace support is newly developed.

为适应巷道支护的多种要求,新研制开发了弧状梯形金属支架,针对其力学特征,采用曲梁力学模型进行了受力分析,求解出了最大承载能力的表达式,与梯形金属支架承载能力相比较,得到了弧状梯形金属支架的承载能力系数。

Based on the gray assembles, the trapezium gray analysis is presented, and it is applied to environmental quality assessment.

以灰色聚类为基础 ,提出了梯形灰色聚类分析法 ,并将其应用于环境质量评价之中 。