Tim Lee of PI Economics reckons that American profits may be depressed for some time, because the country is headed for a prolonged period of slow growth.
pi Economics的Tim Lee认为美国企业利润仍会低迷一段时间，国家正走向长期缓慢增长之中。
However, PI flags may indicate the conditional PI features shown on the device label.
不过，PI标记可以标示器械标签上所显示的条件性的PI特征。
Conclusion Breast tumors with higher PI value and inhomogeneous enhancement may have a higher MVD, indicating a strong tendency of malignancy.
结论超声造影后pi值较高、呈不均匀增强的肿瘤，其恶性可能较大，MVD亦较高。
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