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单词 Two port
释义

Two port

原声例句
VOA慢速英语_健康

The statement talked about positive cases on the Sergeant Aldea ship that would have left from two ports on Chile's mainland.

声明还提到了" 阿尔迪亚中士" 号上的阳性病例,这艘船本该从智利大陆的两个港口离开。

VOA Special 2018年7月合集

An estimated $417 billion worth of goods pass through the two ports each year.

每年估计有 4170 亿美元的货物通过这两个港口。

边缘科技博客

Unfortunately, it's still just two ports and they are both on the left hand side.

不幸的是,它仍然只有两个端口,而且都在左侧。

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And depending on how much light is lost between these two ports we can kind of determine how much oxygen is in the blood and where the brain is most active.

根据这两个端口之间的光损耗我们可以确定血液中有多少氧气以及大脑最活跃的部位。

边缘科技博客

My review unit came with the two port charger and it's fine, but I'd probably opt for the 67 watt brick for the ability to fast charge, even though it's physically a little bigger.

我的评测设备配备了双端口充电器,它很好,但我可能会选择 67 瓦砖, 因为它能够快速充电, 即使它的体积更大一些。

国富论(四)

Except with Japan, the Chinese carry on, themselves, and in their own bottoms, little or no foreign trade; and it is only into one or two ports of their kingdom that they even admit the ships of foreign nations.

除了与日本外,中国人自己在自己的底下进行很少或根本没有对外贸易;他们甚至只允许外国船只进入他们王国的一两个港口。

中文百科

二端口网络 Two-port network

(重定向自Two port)
图1:一个定义了符号的二端口网络。请注意端口条件:相同的电流从同一端口流入并流出。
图2:Z参数等效的T形等效电路,其中I1和I2为独立变量。图中的电阻表示一般的阻抗。
图3:双极型电流镜,RE是射极负反馈。i1 是基准电流,i2是输出电流,小写字母符号表明这些电流是包含直流分量的总电流。
图4:小信号双极型电流镜,RE是射极负反馈。I1是小信号基准电流的幅值,I2是小信号输出电流的幅值。

二端口网络英语:two-port network)又称双端口网络双口网络,是四端子网络四端网络)的一种,是具有2个端口的电路或装置,端口与电路内部网络相连接。一个端口由2个端子组成,当这2个端子满足端口条件,即一个端子流入的电流等于另一个端子流出的电流时,则这2个端子就构成了一个端口,换句话说,也就是相同的电流从同一端口流入并流出。二端口网络的实例包括三极管的小信号模型(如混合π模型)、电子滤波器以及阻抗匹配网络。被动二端口网络的分析是互易定理的副产物,最初由洛伦兹提出。

二端口网络能将电路的整体或一部分用它们相应的外特性参数来表示,而不用考虑其内部的具体情况,这样被表示的电路就成为具有一组特殊性质的“黑箱”,从而就能抽象化电路的物理组成,简化分析。任意具有4个端子的线性电路都可以变换成二端口网络,且满足不含独立源的条件和端口条件。

英语百科

Two-port network 二端口网络

(重定向自Two port)
 Figure 3: Bipolar current mirror: i1 is the reference current and i2 is the output current; lower case symbols indicate these are total currents that include the DC components
 Figure 4: Small-signal bipolar current mirror: I1 is the amplitude of the small-signal reference current and I2 is the amplitude of the small-signal output current
Figure 7: Common-base amplifier with AC current source I1 as signal input and unspecified load supporting voltage V2 and a dependent current I2.
Figure 9: Common-base amplifier with AC voltage source V1 as signal input and unspecified load delivering current I2 at a dependent voltage V2.

A two-port network (a kind of four-terminal network or quadripole) is an electrical network (circuit) or device with two pairs of terminals to connect to external circuits. Two terminals constitute a port if the currents applied to them satisfy the essential requirement known as the port condition: the electric current entering one terminal must equal the current emerging from the other terminal on the same port. The ports constitute interfaces where the network connects to other networks, the points where signals are applied or outputs are taken. In a two-port network, often port 1 is considered the input port and port 2 is considered the output port.

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更新时间:2025/6/21 3:55:19