May 20 is World Metrology Day, commemorating the anniversary of the signing of the Metre Convention in 1875. This treaty provides the basis for a worldwide coherent measurement system that underpins scientific discovery and innovation, industrial manufacturing and international trade, as well as the improvement of the quality of life and the protection of the global environment.
5月20日是世界计量日，以纪念1875年《米制公约》签署日。该公约为一致的测量系统奠定了基础，该系统是科学发现和创新、工业制造和贸易以及提高生活质量和保护环境的基础。

The theme for World Metrology Day 2020 is Measurements for global trade. This theme was chosen to create awareness of the important role measurement plays in facilitating fair global trade, ensuring products meet standards and regulations, and satisfying customer quality expectations.
2020年世界计量日的主题是“贸易计量” 。选择该主题的目的是提高人们对计量在促进公平贸易，确保产品符合标准和法规以及满足客户质量期望方面的重要作用的认识。

Across the world, national metrology institutes continually advance measurement science by developing and validating new measurement techniques at the necessary level of sophistication. The national metrology institutes participate in measurement comparisons coordinated by the Bureau International des Poids et Mesures (BIPM) to ensure the reliability of measurement results worldwide.
在世界范围内，国家计量机构通过在必要的复杂程度上开发和验证新的计量技术，不断推进测量科学的发展。国家计量机构参与计量局（BIPM）协调的比对，以确保测量结果的可靠性。

The International Organization of Legal Metrology (OIML) develops International Recommendations, which aim to align and harmonise requirements worldwide in many fields. The OIML also operates the OIML Certification System (OIML-CS) which facilitates international acceptance and global trade of regulated measuring instruments.
法定计量组织（OIML）制定了建议，旨在协调和统一世界范围内许多领域的要求。OIML还运行OIML认证系统（OIML-CS），该系统促进受管制测量仪器的接受和贸易。

These international metrology systems provide the necessary assurance and confidence that measurements are accurate, providing a sound basis for global trade today and helping us to prepare for the challenges of tomorrow.
这些计量系统为计量准确提供了必要的保证和信心，为今天的贸易提供了良好的基础，并帮助我们为明天的挑战做好准备。

World Metrology Day recognises and celebrates the contribution of all the people that work in intergovernmental and national metrology organisations and institutes throughout the year.
世界计量日表彰和庆祝所有在政府间和国家计量组织和研究所工作的人全年所作的贡献。