Measuring lactate threshold require a medical test while on a treadmill or stationary bike.

测量乳酸门槛要求在临床测试的同时，人需要在跑步机或固定单车上。

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The reference location is typically either the fixed excitation location when performing a shaker excitation or the stationary accelerometer location when performing an impact test.

典型情况是，要么当进行激振器激励时激励位置固定，要么进行锤击试验时加速度位置固定。

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Objective:This paper gives a statistical method of how to test if a time series is stationary.

目的：提出一种客观的统计检验方法来判断时间序列的平稳性。

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De Villota, one of two women contracted to an F1 team this year, collided with a stationary support truck after completing her first lap at her first test outing for the UK-based Russian marque.

CNN: Ferrari chief 'concerned' by F1 rivals' progress