The paper introduces a way of measuring the deflection involute spline, and the calculation of diameter and distance of the measuring bar.
介绍了用量棒检测变位渐开线花键的方法，以及量棒直径、跨棒距、棒间距的计算方法和公式。
Trees s fixed high diameter meter is a new kind measuring instrument, which bases on many kinds of technologies such as the one-chip computer, ultrasonic and bar code discerning.
定高树径测量仪是基于单片机、超声波测距、条形码识别等多种技术而开发研制的在树木确定高度情况下进行测量树木直径的一种新型测量仪器。
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