One company has presented an idea in which metal strips inserted in pavements and roads operate fly wheels by means of a piston action using hydraulic fluid.
一个公司提出这样想法：嵌在人行道和路面上的金属条用液压活塞的作用使飞轮转动。
Sheldon - They make up a non-Newtonian fluid, which is liquid, but solid under the percussive action of the speaker.
谢尔顿—它们组成了非牛顿流体。是一种液体，但是在喇叭的冲击作用下就成了固体。
In this paper are described first the differential equation and finite element formula for fluid migration under the action of crust stress in a porous rock.
首先叙述了地应力作用下空隙弹性介质中流体运移的基本方程及由基本方程推导的有限元公式。
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