介绍一种大孔径内径和圆度专用检验量具的设计，并通过计算确定该量具的设计参数并对该量具进行误差分析。
A special test gauge for large aperture inner diameter and roundness is designed in this paper, and the gauge error is analyzed by calculating and determining its parameters.
应用超声心动图仪测量室间隔、左室后壁厚度、左室舒张末内径并计算出左室心肌重量（LVM ） ；
The interventricular septum thickness (IVST), posterior wall thickness , end diastolic diameter of left ventricle and left ventricular mass(LVM) were measured.
以超声心动图检测左室舒张末期内径，舒张末期室间隔和左室后壁厚度等，计算左室重量指数(LVMI)。
The left ventricular diameter at end-diastole and the thickness of interventricular septum and posterior wall were measured with echocardiography. Left ventricular mass index (LVMI) was calculated.
探讨了实现等价替代的条件，并据此导出了当量毛细管内径和长度的精确计算公式。
The equivalent conditions are discussed and theoretical formulas of the equivalent inner diameter and length are derived from the fundamental momentum and energy equations.
探讨了实现等价替代的条件，并据此导出了当量毛细管内径和长度的精确计算公式。
The equivalent conditions are discussed and theoretical formulas of the equivalent inner diameter and length are derived from the fundamental momentum and energy equations.
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