The two sides of this equation cannot be mathematically unraveled; they are one system: lizard-mirror, plant/insect, rock-life, and now in modern times, human/machine.
等式的两端并不能精确地开解；它们同属一个系统：蜥蜴／镜子、植物／昆虫、岩石／生命，以及当代的人类／机器系统。
In this paper, a two-dimensional flow equation and a thermodiffusion equation are used to simulate the diffusion feature of the cooling water drained into Puyang River by Xiaoshan Power Plant.
本文用二维水流方程和平面热扩散方程模拟电厂温排水在浦阳江中的扩散情况。
Objective: To establish the relationship equation of yield and extraction time of plant volatile oil.
目的：建立植物挥发油提取量与提取时间关系式。
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