服务业PMI是什么意思：中英文双语阅读

中文段落：

服务业PMI，即服务业采购经理指数，是衡量服务业经济活动的一个重要指标。它是一个综合指数，通过对服务业中不同行业的采购经理进行问卷调查，收集有关订单、生产、就业、供应商配送时间等方面的信息，并进行加权处理而得出的。PMI指数通常以50为荣枯线，指数高于50表示服务业经济活动扩张，低于50则表示收缩。

服务业PMI的重要性在于它能够及时反映服务业经济活动的变化，为政策制定者和市场参与者提供重要的参考信息。通过观察PMI指数的变化，可以预测服务业的发展趋势，判断经济运行的健康状况。同时，服务业PMI也是国际间比较经济活力的重要指标之一，对于促进国际贸易和投资具有重要意义。

英文段落：

The Service PMI, or the Purchasing Managers' Index for the service sector, is a crucial indicator for measuring economic activity in the service industry. It is a composite index derived from a questionnaire survey conducted among purchasing managers across different industries within the service sector, collecting information on orders, production, employment, supplier delivery times, and other relevant aspects. This data is then weighted and processed to calculate the final index. Typically, a PMI score of 50 is considered the threshold between expansion and contraction, with a score above 50 indicating expansion in service sector economic activity and below 50 indicating contraction.

The significance of the Service PMI lies in its ability to provide timely reflections of changes in economic activity within the service sector, serving as an essential reference for policymakers and market participants. By observing changes in the PMI, trends in the service sector can be anticipated, and the overall health of the economy can be judged. Furthermore, the Service PMI is also a key indicator for comparing economic vitality internationally, playing a significant role in promoting international trade and investment.