| 1. | Derivation and solutions to the differential form of mass conservation equations
质量守恒微分方程的推导解析和解答。 |
| 2. | Mass conservation equation
质量守恒方程 |
| 3. | Second - order perturbational finite difference schemes for hyperbolic conservation equation
双曲守恒型方程的二阶摄动有限差分格式 |
| 4. | The main work and conclusions of present paper are as follows . ( 1 ) three conservation equations on unconfined gas cloud explosions were deduced and reasonably simplized
本文的主要工作和结论如下： ( 1 )推导了描述可燃气云爆炸的3个守恒方程，并进行了合理简化。 |
| 5. | A two dimension analytical model for the natural condensation of steam in the presence of noncondensable gases was proposed based on the mass , momentum and energy conservation equations of condensing mixture flow
在蒸汽、凝结液膜和不凝性气体的质量、动量和能量守衡方程的基础上，建立了大空间内含不凝性气体的蒸汽自然对流冷凝的二维分析模型。 |
| 6. | According to energy conservation equation and fusion and evaporation characteristics of electrode materials , a simplified one - dimension mathematical model was made and numerically solved by means of fdtd ( finite - difference time - domain )
根据能量守恒方程，同时考虑了电极材料的熔解和气化特性，建立了电极烧蚀过程的一维简化数学模型，并采用时域有限差分法( fdtd )进行了数值求解。 |
| 7. | Based on the mass and energy conservation equations of the borehole and formation - borehole system , the decisive functions between production rate and flow flux as well as temperature of the fluids in the borehole as all depth of the well have been deduced in this study
本文在井筒及井筒?地层系统中的质量能量守恒方程基础上，推导出了沿井身的地层各相产出速度与井眼流量温度之间的决定性方程组。 |
| 8. | The universal principle of mass conservation is introduced into porous media fluid mechanics followed by obtaining the general form of the mass conservation equation which used for oil - gas or oil - water percolation and media - deformed rocks is verified
摘要将普遍的守恒原理引入了多孔介质流体力学中，得到了质量守恒方程的一般表达式，并用油气、油水两相渗流和变形介质中岩石固相的质量守恒方程进行验证。 |
| 9. | For the actual situation of multiplayer production in most oil wells , velocity and flow change are considered in the model while fluid moves up the well , and conservation equation including continuous equation , momentum equation and energy equation are solved together
对大多数生产井多层产液的情况，并考虑到井筒内液体在上升过程中的速度变化和流量变化，把质量、动量和能量守恒方程耦合联立求解。 |
| 10. | An analytical model for the forced condensation of steam in the presence of noncondensable gases was proposed based on the mass , momentum and energy conservation equations of condensing mixture flow , involving the analogy between heat and mass transfer in the gas / liquid interface
总之，蒸汽流量、空气含量和系统压力是影响蒸气冷凝的重要因素。相似的基础上，建立了竖直管内蒸气强迫对流冷凝的一维分析模型。 |
