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Electronic sphygmomanometer measuring whether the Right

 Electronic sphygmomanometer, mercury sphygmomanometer measurement principle is essentially the same, the electronic sphygmomanometer blood pressure measurement is accurate, but excludes the subjective human error (such as the eyes to see the scale of the error, the sensitivity of the human ear sounds differentetc.).

In addition, human blood pressure is not a relatively fixed value, but constantly changing, so each time measurement value is constantly changing, two measurements of the same blood pressure values ​​is very rare, it is not measured the same blood pressure values ​​as the measure of measuring whether the Right.

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