secondary standard

简明释义

二次标准

英英释义

例句

1.A secondary standard 二级标准 is essential for validating the performance of primary standards.

验证一级标准性能时，二级标准 是必不可少的。

2.In laboratories, a secondary standard 二级标准 is often used to calibrate instruments.

在实验室中，二级标准 通常用于校准仪器。

3.The secondary standard 二级标准 helps ensure the accuracy of measurements in chemical analysis.

二级标准 有助于确保化学分析中测量的准确性。

4.When performing titrations, using a secondary standard 二级标准 can provide more reliable results.

在进行滴定时，使用 二级标准 可以提供更可靠的结果。

5.In quality control, a secondary standard 二级标准 is used to check the calibration of measuring devices.

在质量控制中，二级标准 用于检查测量设备的校准。

作文

In the world of measurement and standards, the term secondary standard refers to a type of standard that is used to calibrate other instruments or standards but is not itself the primary reference. A secondary standard is typically established by comparison with a primary standard, which is the highest level of accuracy and reliability. Understanding the role of secondary standards is crucial in various fields, including science, engineering, and manufacturing.To illustrate the importance of secondary standards, consider the field of metrology, which is the science of measurement. In metrology, primary standards are often maintained by national laboratories and are used to define units of measurement with utmost precision. However, these primary standards are not always practical for everyday use. This is where secondary standards come into play. They provide a means for laboratories, industries, and researchers to obtain accurate measurements without needing direct access to primary standards.For example, in the context of electrical measurements, a primary standard might be a highly precise voltmeter that is only available at a national lab. A secondary standard could be a calibrated voltmeter that has been adjusted to match the primary standard. This allows engineers and technicians in various industries to perform measurements with a high degree of confidence, knowing that their equipment has been accurately calibrated against a reliable reference.Moreover, secondary standards are essential for maintaining consistency across different laboratories and industries. When multiple organizations use the same secondary standard, it ensures that their measurements are comparable. This is particularly important in fields like pharmaceuticals, where accurate dosages must be measured consistently to ensure patient safety. If one laboratory uses a different calibration method than another, the results could vary significantly, leading to potential health risks.The establishment and maintenance of secondary standards involve rigorous protocols. Laboratories must regularly check and recalibrate their secondary standards against primary standards to ensure ongoing accuracy. This process can be time-consuming and costly, but it is necessary for upholding the integrity of measurements across various applications.Furthermore, advancements in technology have also influenced the development of secondary standards. With the rise of digital measurement tools and automated calibration systems, the process of establishing and maintaining secondary standards has become more efficient. However, it remains critical to understand the foundational principles behind these standards to ensure that they are used correctly.In conclusion, the concept of secondary standards plays a vital role in the field of measurement. They serve as a bridge between primary standards and everyday applications, ensuring that measurements are accurate, consistent, and reliable. As industries continue to evolve and demand higher precision, the significance of secondary standards will only grow. Therefore, professionals in various fields must appreciate the value of secondary standards and the meticulous processes involved in their calibration and maintenance.

在测量和标准的世界中，术语secondary standard指的是一种用于校准其他仪器或标准的标准，但它本身并不是主要参考。secondary standard通常通过与主要标准的比较来建立，主要标准是准确性和可靠性的最高水平。理解secondary standards的作用在科学、工程和制造等各个领域都是至关重要的。为了说明secondary standards的重要性，可以考虑计量学领域，即测量科学。在计量学中，主要标准通常由国家实验室维护，用于以极高的精度定义测量单位。然而，这些主要标准并不总是适合日常使用。这就是secondary standards发挥作用的地方。它们为实验室、工业和研究人员提供了一种获得准确测量的方法，而无需直接访问主要标准。例如，在电气测量的背景下，主要标准可能是一个高度精确的伏特计，仅在国家实验室可用。secondary standard可以是一个经过校准的伏特计，已调整为与主要标准匹配。这使得各行业的工程师和技术人员能够进行高置信度的测量，知道他们的设备已根据可靠的参考进行了准确校准。此外，secondary standards对于维护不同实验室和行业之间的一致性也至关重要。当多个组织使用相同的secondary standard时，它确保了他们的测量是可比的。这在制药等领域尤为重要，其中必须一致地测量准确的剂量以确保患者安全。如果一个实验室使用不同的校准方法而另一个实验室使用的不同，结果可能会显著变化，导致潜在的健康风险。建立和维护secondary standards涉及严格的协议。实验室必须定期检查并重新校准其secondary standards以确保持续的准确性。这个过程可能耗时且成本高，但对于维护各类应用测量的完整性是必要的。此外，技术进步也影响了secondary standards的发展。随着数字测量工具和自动校准系统的兴起，建立和维护secondary standards的过程变得更加高效。然而，理解这些标准背后的基本原则仍然至关重要，以确保它们被正确使用。总之，secondary standards的概念在测量领域中发挥着重要作用。它们作为主要标准和日常应用之间的桥梁，确保测量准确、一致和可靠。随着行业的不断发展和对更高精度的需求，secondary standards的重要性只会增加。因此，各个领域的专业人士必须认识到secondary standards的价值以及与其校准和维护相关的细致过程。