Equationsset based on analytic equation was presented to determine the position of device intervening body cavity to diagnose disease.
为了解决介入人体腔道诊疗器件的定位问题，提出了一种利用永磁磁场解析表达式组建方程来反推位置的方法。
2
Direct simulation of a process of interest, rather than the integration of a set of underlying evolution equations, is an indispensable element in the study of complex systems.
直接模拟复杂有趣的过程，而不是计算一套枯燥的演化公式，这是如今复杂系统研究中必不可少的要素。
3
Parametric models are built from a set of mathematical equations.