block signal

简明释义

闭塞信号机

英英释义

例句

1.When the server is overloaded, it may send a block signal (阻塞信号) to limit incoming requests.

当服务器过载时，它可能会发送一个block signal (阻塞信号)来限制传入请求。

2.The train had to stop because it received a block signal (阻塞信号) indicating that the track ahead was not clear.

火车不得不停下，因为它收到了一个block signal (阻塞信号)，表示前方轨道不通畅。

3.In programming, a block signal (阻塞信号) can be used to pause execution until a condition is met.

在编程中，block signal (阻塞信号)可用于暂停执行，直到满足某个条件。

4.In telecommunications, a block signal (阻塞信号) can prevent unauthorized access to a network.

在电信中，block signal (阻塞信号)可以防止未经授权的访问网络。

5.The traffic lights turned red, which served as a block signal (阻塞信号) for the vehicles.

交通灯变为红色，这对车辆来说是一个block signal (阻塞信号)。

作文

In the world of transportation, especially in railways, signals play a crucial role in ensuring safety and efficiency. One of the most important types of signals is the block signal, which is designed to control train movements on a section of track. The primary purpose of a block signal is to indicate whether a train can proceed or must stop, thereby preventing collisions and ensuring that trains operate safely within their designated blocks. A block signal typically operates on a simple principle: it divides the railway into sections, known as blocks. Each block can only be occupied by one train at a time. When a train enters a block, the block signal for that block will change to indicate that it is occupied, usually showing a red light. This red light serves as a warning to any following trains that they must stop until the block is clear. Once the train leaves the block, the signal changes to green, allowing other trains to enter the block safely.The importance of block signals cannot be overstated. They are essential in maintaining the flow of train traffic, especially in busy rail networks where multiple trains may be operating simultaneously. Without these signals, the risk of accidents would significantly increase, leading to potentially catastrophic outcomes. Furthermore, block signals help in the efficient scheduling of train services, allowing for better management of timetables and reducing delays.In addition to their safety functions, block signals also contribute to the overall efficiency of railway operations. By clearly indicating when a block is occupied, they enable train operators to make informed decisions about speed and timing. This is particularly important in high-speed rail systems, where even slight delays can have a cascading effect on the entire network.Modern advancements in technology have led to the evolution of block signals. Traditional mechanical signals have been largely replaced by electronic signals that can provide more precise information. These modern systems can integrate with centralized traffic control systems, allowing for real-time monitoring of train positions and signal statuses. This integration enhances the ability to manage train movements effectively and reduces the likelihood of human error.In conclusion, the block signal is a fundamental component of railway safety and efficiency. Its role in preventing collisions and managing train traffic is vital in ensuring that rail transport remains one of the safest modes of travel. As technology continues to advance, we can expect further improvements in the functionality and reliability of block signals, making railways even safer and more efficient for passengers and freight alike.

在交通运输的世界中，尤其是在铁路中，信号在确保安全和效率方面发挥着至关重要的作用。其中最重要的信号类型之一是区段信号，它旨在控制列车在一段轨道上的运动。区段信号的主要目的是指示列车是否可以继续行驶或必须停车，从而防止碰撞并确保列车在其指定的区段内安全运行。区段信号通常基于一个简单的原理：将铁路划分为多个部分，称为区段。每个区段一次只能容纳一列火车。当一列火车进入一个区段时，该区段的区段信号会改变以指示该区段已被占用，通常显示红灯。这个红灯作为警告，提醒后续列车必须停车，直到该区段清空。一旦列车离开该区段，信号会变为绿色，允许其他列车安全进入该区段。区段信号的重要性不容低估。它们在维护列车交通流动方面至关重要，特别是在繁忙的铁路网络中，可能同时有多列火车在运行。如果没有这些信号，事故的风险将显著增加，可能导致灾难性的后果。此外，区段信号有助于高效安排列车服务，使时间表管理得更好，减少延误。除了安全功能外，区段信号还促进了铁路运营的整体效率。通过明确指示何时占用一个区段，它们使列车操作员能够做出关于速度和时机的明智决策。这在高速铁路系统中尤为重要，因为即使是轻微的延误也可能对整个网络产生连锁反应。现代技术的进步导致了区段信号的演变。传统的机械信号已被电子信号大大取代，这些电子信号可以提供更精确的信息。这些现代系统可以与集中交通控制系统集成，允许实时监控列车位置和信号状态。这种集成增强了有效管理列车运动的能力，并减少了人为错误的可能性。总之，区段信号是铁路安全和效率的基本组成部分。它在防止碰撞和管理列车交通中的作用对于确保铁路运输仍然是最安全的旅行方式之一至关重要。随着技术的不断进步，我们可以期待区段信号在功能和可靠性方面的进一步改善，使铁路在乘客和货物运输中变得更加安全和高效。