The precondition of the acceleration testing method is the determination of the train resistance, rotary mass coefficient and train mass. The crucial test is measurement of train acceleration.
加速度测试法的先决条件是确定列车基本阻力、回转质量系数和列车质量，而其测试关键是列车加速度的测定。
There are three methods for the determination of the acceleration based on differential GPS carrier-phase technology: position differentiating, velocity differentiating and direct carrier method.
利用GPS差分技术确定载体运动加速度，其方法有三种：位置微分法、速度微分法和加速度直接解算法。
Through this way to go on the diagnosis of hitch. The main statement is the two thresholds determination of acceleration and coefficient and the judgment of hitch during the analyze of chart, so…
重点论述简易诊断中加速度和峭度系数两个参数的门限确定以及谱分析中的故障判断，达到简易诊断和精密诊断的良好结合。
Through this way to go on the diagnosis of hitch. The main statement is the two thresholds determination of acceleration and coefficient and the judgment of hitch during the analyze of chart, so…
重点论述简易诊断中加速度和峭度系数两个参数的门限确定以及谱分析中的故障判断，达到简易诊断和精密诊断的良好结合。
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