经统计学分析，探讨斑块的不同分型与脑梗塞发生率的关系。
Statistical analysis was performed to evaluate the associativity between the type of the plaque and stroke.
目的探讨实时三维超声观测不同分型的室间隔缺损的最佳实时三维显示平面。
Objective To establish the optimal section planes for observing ventricular septal defect(VSD) by real-time three dimensional echocardiography(RT-3DE).
保税仓库按照使用对象不同分为公用型保税仓库、自用型保税仓库。
A bonded warehouse is divided into public bonded warehouses and bonded warehouses for self use according to the objects used.
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