②心肌运动速度阶差(myocardial velocity gradient,MVG):即心内膜与心外膜运动速度之差除以室壁厚度[4]。
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除此以外,由速度指标还可以经后处理推算出以下指标:心肌运 动速度阶差(Myocardialvelocitygradient,MVG):心内膜与心外膜心 肌运动速度之差除以心肌厚度,此值是相对值,不受心脏空间位置移 动及多普勒入射角度...
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压力阶差 pressure gradient ; PG ; IVPG
二阶差分 second order difference ; second difference ; knee point
一阶差分方程 [数] first order difference equation ; first difference equation
温度阶差 thermal taper
高阶差分 [数] higher difference ; high-order difference
肝静脉压力阶差 HVPG
三阶差分 [数] third order difference
心室阶差 ventricular gradient
速度阶差 MvG
将视电阻率曲线与视电阻率一阶差分曲线应用于岩土工程施工中。
To effectively make use of resistivity information, apparent resistivity and its difference curve are used respectively in engineering and compared them.
并且给出了一个新的以数值解的二阶差分作为基本模块的熵耗散函数。
A new entropy dissipator, based on the second-order difference of the numerical solution is given.
其中一阶和二阶差分关联度能满足规范性要求,具有无量纲化后的保序性。
The first order and second order incidence degree formulae can satisfy the requirement of specification, and possess isotonicity after non-dimensional disposal.
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