两个轴，一个代表重要性，一个代表紧急程度，二者相交。
Two axes, one for importance, the other for urgency, intersect.
目的探讨应用多普勒组织成像（DTI）评价单纯性风湿性二尖瓣狭窄患者左室长轴收缩功能的意义。
Objective To evaluate Left ventricular long-axis systolic function in patients with rheumatic mitral stenosis by Doppler tissue imaging(DTI).
针对二轴轮廓系统的闭环数字仿真和实验结果，证明该方法的可行性和有效性。
The results of digital simulations and experiments on a typical two axis contouring system indicate that the feasibility and effectiveness of this new compensating method are satisfactory.
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