基于两相流体动力学的理论，建立空蚀射流切割装置中短管内的压力变化梯度的基本方程式；
Based on the theory of two-phase flow, the equation of the pressure gradient is found for the short pipe in cavitation jet cutting set.
地应力是影响储层沉积水水头的主要因素，地应力梯度是油气水运移的主要驱动力。
Terrestrial stress is a main control on hydrostatic head of reservoir, and its gradient powers oil, gas and water migration.
用积分本征模方程研究了在托卡马克等离子体中包含全部动力学效应的动力剪切阿尔芬波模（无论是否存在温度梯度） 。
Kinetic shear Alfvn modes in tokamak plasmas (with or without temperature gradient) in the full gyrokinetic limit are numerically investigated by using the integral eigenvalue equations.
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