应用流体机械相似定律及电工学原理，阐明变频调速原理。
The analogical law of fluid machines and principle of electronics are applied to explain the principle of frequency conversion.
具有双孔截面的铝合金挤压管的断面形状满足几何相似定律。
The geometrical similarity law in cross section was satisfied for the aluminum extruded tubes with a double hollow section.
根据风杌的相似定律，阐述了特长隧道掘进通风的特性，详细分析了风机变频工作的能耗。
According to the law of similarity of fan, the characteristic of long-distance tunneling ventilation was analyzed, and the energy consumption of variable frequency fan was described.
阐述了循环水泵变频调速的节能原理，提出离心 水泵相似定律的适用性和等效率曲线概念。
Presents the energy saving principle of a frequency-controlled pump and points out the applicability of the law of similitude for centrifugal pumps and the conception of constant efficiency curves.
在本文中，依据水泵相似定律，论述了一种针对于该系统的水泵功率的一种计算方法，并分析了影响变频节能效果的主要因素。
In this article, based on pump's similar theory, a calculation method of the pump power for the system is discussed and the impact of energy-saving effect of conversion factors is analyzed.
不知怎么的，这一定律和,角动量守恒定律有所相似。
Somehow, it has the smell of some conservation of angular momentum.
结果证明，库兹韦尔的结论与摩尔定律极为相似，二者都是每两年翻一番。
As it turned out, Kurzweil's Numbers looked a lot like Moore's. They doubled every couple of years.
结果证明，库兹韦尔的结论与摩尔定律极为相似，二者都是每两年翻一番。
As it turned out, Kurzweil's Numbers looked a lot like Moore's. They doubled every couple of years.
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