siemens

简明释义

英[ˈsiːmənz]美[ˈsiːmənz]

n. [电] 西门子（财富500强公司之一，总部所在地德国，主要经营电子电气）

英英释义

单词用法

同义词

反义词

例句

1.Yet Siemens does seem to be winning business with bundled offers.

不过西门子似乎通过捆绑赢得了更多的生意。

2.Its authors had detailed knowledge of Siemens' software and its security weaknesses.

笔者已经详细的了解了西门子软件的安全漏洞在哪里。

3.A Siemens spokesman said the company 'has no intention to pull out.'

西门子的一位发言人称公司没有从Areva撤出的计划。

4.Siemens has confessed to bribing customers and MAN is being investigated for the same.

西门子承认行贿客户，MAN集团亦正因此接受调查。

5.Even so SNCF's Eurostar is reportedly considering ordering ICE trains from Siemens.

即便如此SNCF的欧洲之星也被报道说正考虑从西门子订购一批ICE列车。

6.Analysts are confident that Siemens will not only survive but benefit from all the upheaval.

不过分析人士对西门子不仅会挺过这场巨变而且还会从中受益显得信心十足。

7.A Siemens desk telephone, 1878, Germany.

1878年德国西门子座机。

8.Remove GE's media holdings, and Siemens takes the lead.

再将通用的媒体业务刨除，西门子就领先了。

9.The water quality was tested, showing a conductivity of 0.5 siemens per meter.

水质经过测试，显示出每米0.5西门子的导电性。

10.In electronics, siemens is often used to express the conductance of components.

在电子学中，西门子常用于表示元件的导电性。

11.We need to measure the conductance in siemens for this circuit.

我们需要测量这个电路的导电率，单位是西门子。

12.A higher value in siemens indicates better conductivity.

在西门子中更高的数值表示更好的导电性。

13.The electrical engineer calculated the resistance using the unit of siemens.

电气工程师使用西门子这个单位计算了电阻。

作文

The term siemens refers to a unit of electrical conductance in the International System of Units (SI). It is named after the German engineer Werner von Siemens, who made significant contributions to the field of electrical engineering. Understanding the concept of siemens is essential for anyone studying electrical circuits and systems, as it plays a crucial role in determining how well electricity can flow through a conductor.In electrical engineering, conductance is the measure of how easily electricity flows through an object. The higher the siemens value, the better the material conducts electricity. For instance, metals like copper and aluminum have high conductance and thus are measured in high siemens. Conversely, insulators like rubber or glass have very low conductance values, often approaching zero siemens. This distinction is vital when designing circuits, as engineers must choose materials that optimize performance while minimizing energy loss due to resistance.To put this into context, consider a simple electric circuit consisting of a battery, wires, and a light bulb. The battery provides voltage, which pushes electrons through the wires. If the wires have a high conductance (measured in siemens), the electrons can flow easily, and the light bulb will shine brightly. However, if the wires have low conductance, the flow of electricity will be hindered, resulting in a dimmer light or even a non-functioning bulb.When working with resistors, the relationship between resistance and conductance also comes into play. Resistance is measured in ohms, and conductance is the reciprocal of resistance. This means that if you know the resistance of a component, you can easily calculate its conductance in siemens. For example, a resistor with a resistance of 10 ohms has a conductance of 0.1 siemens. This relationship is fundamental in circuit analysis and design, as it allows engineers to predict how components will behave under different conditions.Moreover, the concept of siemens extends beyond simple circuits. In more complex systems, such as those found in power distribution networks or electronic devices, understanding conductance is crucial for ensuring efficiency and safety. Engineers must calculate the total conductance of various paths in a circuit to determine how much current will flow and to prevent overheating or damage to components.In summary, the unit siemens is a fundamental concept in electrical engineering that measures electrical conductance. It is essential for understanding how electricity flows through materials and plays a critical role in the design and analysis of electrical circuits. As technology continues to advance, the importance of mastering concepts like siemens will only grow, making it a key area of focus for future engineers and scientists. Whether you are studying basic circuits or delving into more complex electrical systems, a solid grasp of siemens and its implications is invaluable for success in the field of electrical engineering.

术语siemens指的是国际单位制（SI）中电导的单位。它以德国工程师维尔纳·冯·西门子（Werner von Siemens）的名字命名，他对电气工程领域做出了重要贡献。理解siemens的概念对于任何学习电路和系统的人来说都是至关重要的，因为它在确定电流通过导体的流动能力方面发挥着关键作用。在电气工程中，电导是衡量电流通过物体的容易程度。siemens值越高，材料的导电性越好。例如，铜和铝等金属具有高电导，因此其测量值较高。相反，橡胶或玻璃等绝缘体的电导值非常低，通常接近零siemens。这种区别在设计电路时至关重要，因为工程师必须选择能够优化性能并最小化由于电阻造成的能量损失的材料。举个例子，考虑一个简单的电路，由电池、导线和灯泡组成。电池提供电压，推动电子通过导线。如果导线具有高电导（以siemens为单位），电子就能轻松流动，灯泡会明亮地发光。然而，如果导线的电导较低，电流的流动将受到阻碍，导致灯光变暗甚至不亮。在使用电阻器时，电阻与电导之间的关系也会发挥作用。电阻以欧姆（ohms）为单位测量，而电导是电阻的倒数。这意味着如果你知道一个元件的电阻，你可以很容易地计算出它在siemens中的电导。例如，一个电阻为10欧姆的电阻器，其电导为0.1siemens。这种关系在电路分析和设计中是基础，因为它使工程师能够预测组件在不同条件下的行为。此外，siemens的概念超越了简单电路。在更复杂的系统中，例如电力分配网络或电子设备，理解电导对于确保效率和安全至关重要。工程师必须计算电路中各种路径的总电导，以确定电流将如何流动，并防止组件过热或损坏。总之，单位siemens是电气工程中的一个基本概念，用于测量电导。它对于理解电流如何通过材料流动至关重要，并在电路的设计和分析中发挥着关键作用。随着技术的不断进步，掌握像siemens这样的概念的重要性只会增加，使其成为未来工程师和科学家的关键关注领域。无论你是在学习基本电路还是深入研究更复杂的电气系统，牢固掌握siemens及其含义对于在电气工程领域的成功都是无价的。