機(jī)械外文翻譯---液壓機(jī)-液壓系統(tǒng)(已修改)
2025-02-04 06:14 本頁(yè)面
【正文】 Hydraulic Machine From: The Columbia Encyclopedia, Sixth Edition Date: 2021 Hydraulic machine that derives its power from the motion or pressure of water or some other liquid. Hydraulic equipment and technology is something that we are all at least passingly familiar with. If we think about it, we know that the principles of hydraulics are applied to make many mon machines work. For example hydraulics are used in agricultural equipment, giant earth moving and mining machines, they are used to steer and stabilize giant ocean liners, help airplanes climb and turn, and make the brakes in our cars work. So hydraulics can provide great force, are obviously very adaptable and used in all kinds of applications, but how do they actually work? What is this hydraulics stuff? Hydraulics is based on a very simple fact of nature you cannot press a liquid. You can press a gas (think about putting more and more air into a tire, the more you put in, the higher the pressure). If you39。re really strong you ca n press a solid mass as well. But no matter how much pressure you apply onto a liquid, it isn39。t possible to press it. Now if you put that liquid into a sealed system and push on it at one end, that pressure is transmitted through the liquid to the other end of the system. The pressure is not diminished. . Hydraulics is Old Stuff The basic concept of hydraulics is not new. The Greeks understood about using water to provide lift and force, and the name hydraulics e form the Latin word for water HYDRA. In the middle Ages, Leonardo da Vinci formulated the basic principle of hydraulics called continuity and Galileo experimented with hydraulics. Hydraulics were even used during the construction of the Eiffel Tower in Paris in the late 188039。s. Hydraulic jacks were used to level the tower and align the metal gird
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