upcast header

简明释义

上升管箱

英英释义

例句

1.The upcast header allows for polymorphism in object-oriented programming.

在面向对象编程中，upcast header允许多态性。

2.When designing the API, ensure that the upcast header is properly documented for users.

在设计API时，确保upcast header得到适当的文档说明，以便用户理解。

3.The upcast header is essential when working with collections of base class pointers.

在处理基类指针集合时，upcast header是必不可少的。

4.Using an upcast header can simplify code maintenance by reducing type dependencies.

使用upcast header可以通过减少类型依赖来简化代码维护。

5.In programming, we often use the upcast header to convert a derived class pointer to a base class pointer.

在编程中，我们经常使用upcast header将派生类指针转换为基类指针。

作文

In the world of mining and geology, the term upcast header holds significant importance. An upcast header refers to a vertical shaft or tunnel designed to ventilate an underground mine by allowing stale air to escape. This concept is crucial for ensuring that miners work in safe conditions, as proper ventilation is necessary to dilute harmful gases and provide fresh air. Without effective ventilation systems, the risk of accidents and health hazards increases dramatically. The construction of an upcast header involves careful planning and engineering. Typically, it is situated at a higher elevation compared to the main workings of the mine. The design must take into account various factors, such as the volume of air that needs to be expelled, the geological conditions of the surrounding area, and the potential for the accumulation of gases like methane. Engineers often use computer simulations to model airflow and optimize the design of the upcast header. In addition to its primary function of ventilation, an upcast header can also serve as a means of access for maintenance and inspection purposes. Regular checks are essential to ensure that the ventilation system is functioning correctly and that any blockages or structural issues are addressed promptly. In some cases, the upcast header may also be equipped with monitoring devices that track air quality and flow rates, providing real-time data to mine operators. The importance of an upcast header extends beyond the immediate safety of the miners. Proper ventilation contributes to the overall efficiency of mining operations. When air circulation is optimal, it enhances the working environment, leading to increased productivity and morale among workers. Conversely, poor ventilation can lead to fatigue and decreased performance, ultimately affecting the mine's output. Moreover, environmental considerations are also tied to the operation of an upcast header. As mines operate, they can produce emissions that may negatively impact the surrounding ecosystem. By effectively managing air flow and minimizing pollutants, an upcast header plays a role in reducing the environmental footprint of mining activities. This is particularly important in today’s world, where sustainability and environmental responsibility are becoming increasingly prioritized. In conclusion, the upcast header is a critical component in the mining industry, serving multiple functions from ventilation to maintenance access. Its design and implementation require a deep understanding of both engineering principles and environmental science. As mining continues to evolve, the role of the upcast header will remain vital in ensuring the safety and efficiency of underground operations, while also addressing environmental concerns. Understanding this term not only highlights its technical significance but also emphasizes the broader implications of mining practices in our society today.

在采矿和地质学的世界中，术语upcast header具有重要意义。upcast header指的是一个垂直的井道或隧道，旨在通过允许陈旧空气逸出，从而为地下矿井通风。这个概念对于确保矿工在安全条件下工作至关重要，因为适当的通风是稀释有害气体并提供新鲜空气所必需的。如果没有有效的通风系统，事故和健康危害的风险将大幅增加。upcast header的建设涉及仔细的规划和工程设计。通常，它位于矿井主要作业的较高位置。设计必须考虑多种因素，例如需要排放的空气量、周围地区的地质条件以及甲烷等气体积聚的潜力。工程师通常使用计算机模拟来建模气流并优化upcast header的设计。除了其主要的通风功能外，upcast header还可以作为维护和检查的通道。定期检查对于确保通风系统正常运作至关重要，并及时处理任何堵塞或结构问题。在某些情况下，upcast header可能还配备监测设备，跟踪空气质量和流量，为矿山运营商提供实时数据。upcast header的重要性不仅限于矿工的直接安全。适当的通风有助于提高采矿作业的整体效率。当空气流通良好时，会增强工作环境，提高工人的生产力和士气。相反，通风不良会导致疲劳和表现下降，最终影响矿井的产出。此外，环境因素也与upcast header的运作相关。随着矿井的运营，它们可能会产生对周围生态系统产生负面影响的排放。通过有效管理气流并最小化污染物的排放，upcast header在减少采矿活动的环境足迹方面发挥了作用。这在当今世界尤为重要，因为可持续性和环境责任越来越受到重视。总之，upcast header是采矿行业中的一个关键组成部分，具有从通风到维护通道的多重功能。其设计和实施需要对工程原理和环境科学有深入的理解。随着采矿的不断发展，upcast header的角色将在确保地下作业的安全和效率，同时解决环境问题方面保持重要性。理解这个术语不仅突显了它的技术意义，还强调了采矿实践在我们今天社会中的更广泛影响。