nominal size

简明释义

公称尺寸

英英释义

例句

1.It is important to understand the difference between nominal size and actual size when working with metals.

在处理金属时，理解名义尺寸与实际尺寸之间的区别非常重要。

2.The nominal size of the electrical conduit is often used for labeling purposes.

电气导管的名义尺寸通常用于标记目的。

3.The pipe has a nominal size of 2 inches, which means its actual diameter is slightly less than that.

这根管道的名义尺寸为2英寸，这意味着它的实际直径略小于此。

4.When ordering lumber, be sure to specify the nominal size so the supplier can provide the correct dimensions.

在订购木材时，请确保指定名义尺寸，以便供应商提供正确的尺寸。

5.In HVAC systems, the nominal size of ducts refers to the approximate measurement used in design.

在暖通空调系统中，风管的名义尺寸指的是设计中使用的近似测量值。

作文

In the field of engineering and manufacturing, understanding the concept of nominal size is crucial for ensuring precision and compatibility in various components. The term nominal size refers to a standard or designated size of an object, which may not represent its actual physical dimensions. This concept is widely used in industries such as construction, plumbing, and manufacturing, where components must fit together seamlessly. For instance, when dealing with pipes, a pipe labeled as having a nominal size of 2 inches may not actually measure exactly 2 inches in diameter; instead, it might be slightly larger or smaller due to manufacturing tolerances.Understanding nominal size is essential for engineers and designers who must account for these variations when creating blueprints or specifications. If a designer specifies a part based on its nominal size, they need to ensure that all components are compatible with the intended design. This is particularly important in assembly lines where multiple parts come together to form a final product. Any discrepancies in size can lead to issues such as misalignment, increased wear, or even complete failure of the assembly.Moreover, the use of nominal size allows for easier communication among professionals in the industry. Instead of discussing the exact measurements of each component, engineers can refer to the nominal size, which serves as a common language. This simplifies the design process and helps avoid confusion, especially when working with suppliers or manufacturers who may have different measurement standards.In addition to its practical applications, the concept of nominal size also plays a role in regulatory compliance. Many industries are governed by strict regulations that dictate the sizes and tolerances of materials used in construction and manufacturing. By adhering to nominal size standards, companies can ensure that their products meet safety and quality requirements.However, relying solely on nominal size can sometimes lead to misunderstandings. For example, if a contractor orders materials based only on nominal size without verifying the actual dimensions, they may find that the pieces do not fit as expected. This can result in delays, increased costs, and frustration on the job site. Therefore, it is vital for professionals to not only understand the concept of nominal size but also to be diligent in measuring and verifying actual dimensions before proceeding with a project.In conclusion, the term nominal size is a fundamental concept in engineering and manufacturing that facilitates the design and production process. It allows for standardized communication and helps ensure that components fit together correctly. However, professionals must be cautious and verify actual dimensions to avoid potential issues. By combining a solid understanding of nominal size with careful measurement practices, engineers and manufacturers can enhance the efficiency and effectiveness of their work, ultimately leading to better quality products and successful projects.

在工程和制造领域，理解“名义尺寸”的概念对于确保各个组件的精确性和兼容性至关重要。术语“名义尺寸”指的是物体的标准或指定尺寸，这可能并不代表其实际的物理尺寸。这个概念广泛应用于建筑、管道和制造等行业，在这些行业中，组件必须无缝地结合在一起。例如，当处理管道时，标记为“名义尺寸”为2英寸的管道，其直径可能并不真正测量为2英寸；相反，由于制造公差，它可能稍微大一点或小一点。理解“名义尺寸”对工程师和设计师至关重要，他们必须在创建蓝图或规格时考虑这些变化。如果设计师根据其“名义尺寸”来指定一个部件，他们需要确保所有组件与预期设计兼容。这在多个部件汇聚成最终产品的装配线上尤其重要。尺寸上的任何差异都可能导致问题，如对齐不当、磨损增加，甚至是装配的完全失效。此外，使用“名义尺寸”还允许行业专业人士之间更容易地沟通。工程师可以引用“名义尺寸”，这作为一种共同语言，而不是讨论每个组件的确切尺寸。这简化了设计过程，并有助于避免混淆，特别是在与可能有不同测量标准的供应商或制造商合作时。除了其实际应用外，“名义尺寸”的概念在合规性方面也发挥着作用。许多行业受严格法规的约束，这些法规规定了建筑和制造中使用材料的尺寸和公差。通过遵循“名义尺寸”标准，公司可以确保其产品符合安全和质量要求。然而，仅仅依赖“名义尺寸”有时会导致误解。例如，如果承包商仅根据“名义尺寸”订购材料，而不验证实际尺寸，他们可能会发现这些零件无法按预期安装。这可能导致延误、成本增加和工地上的挫折。因此，专业人士不仅必须理解“名义尺寸”的概念，还必须在项目进行之前认真测量和验证实际尺寸。总之，术语“名义尺寸”是工程和制造中的一个基本概念，它促进了设计和生产过程。它允许标准化的沟通，并有助于确保组件正确结合。然而，专业人士必须谨慎并验证实际尺寸，以避免潜在问题。通过将对“名义尺寸”的深刻理解与仔细的测量实践相结合，工程师和制造商可以提高工作效率和有效性，最终导致更高质量的产品和成功的项目。