There is a close relationship between the economic fluctuation and general volume unbalance.
经济波动同经济总量失衡有着密切的关系；
It is based on the relationship between the volume pulse blood and pulse pressure.
仪器的原理是基于容积脉搏血流与脉搏压力存在一种相关关系。
It is based on the relationship between the volume pulse blood and pulse pressure.
仪器的原理是基于容积脉搏血流与脉搏压力存在一种相关关系。
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