我们知道还有一些仪器可以测量主动脉脉搏波速率，在颈动脉和股动脉之间。

But we also know there are some devices for measuring pulse wave velocity over the aorta, between carotid and femoral artery.

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欧洲高血压协会在新指南中提倡应该测量脉搏波速率和其他动脉硬化的参数。

European Society of Hypertension in the new guidelines advocates that we should measure, for example, pulse wave velocity, and other aspects of arterial stiffness.

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此波速率传播一定且有特征频率，所以这个研究团队知道他们找什么，在哪找。

Such waves travel at a known speed and have characteristic frequencies, so the team knew what to look for and when.

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