With the improvement of ultraphonic instruments and software, new echocardiographic techniques provide effective tools for evaluation of cardiac function.
随着超声仪器的改进及相应软件的研发，不断涌现的超声新技术为心功能的评价提供了有效的技术工具。
With the improvement of ultraphonic instruments and software, new echocardiographic techniques provide effective tools for evaluation of cardiac function.
随着超声仪器的改进及相应软件的研发，不断涌现的超声新技术为心功能的评价提供了有效的技术工具。
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