20.38 议事机构文件方面出现差异主要是危险货物运输问题专家小组委员会和全球化学品统一分类和标签制度专家小组委员会的会议文件造成的，原因是经济及社会理事会委员会和有关小组委员会的工作在偶数年和奇数年结构不对称。
20.38 The variance in parliamentary documentation is driven mainly by parliamentary documentation for the Subcommittee of Experts on the Transport of Dangerous Goods and the Subcommittee of Experts on the Globally Harmonized System of Classification and Labelling of Chemicals, owing to a structural asymmetry in even and odd years for the work under the Economic and Social Council Committee and related subcommittees.