The vacuum valve type of suctorial mechanical hands are used in carrying copper plate, the good effect are gotten.

利用真空阀式吸附机械手在气动组合台上搬运薄铜板件，取得了良好的效果。

This article presents and deals with the design, principle and structure of experimental device of suctorial type used for determining the suspension speed of agricultural material.

本文提出了测定物料悬浮速度气吸式试验台的设计和总体结构，并论述了原理。经测定得到了较满意的结果。