JIS C60721-3-0-2022 Classification of environmental conditions -- Part 3-0: Classification of groups of environmental parameters and their severities -- Introduction
Classification of environmental conditions -- Part 3-0: Classification of groups of environmental parameters and their severities -- Introduction
Classification of environmental conditions -- Part 3-0: Classification of groups of environmental parameters and their severities -- Introduction 是非强制性国家标准,您可以免费下载前三页