【中文版】

耐用品订单月率是指耐用品订单在一个月内与上一个月相比的变化百分比。这个指标通常被用来衡量制造业的活跃程度，因为耐用品是那些能够长期使用并具有高价值的物品，例如汽车、机器、电脑等。

耐用品订单月率的计算方法是，将本月的耐用品订单总额减去上一个月的耐用品订单总额，再除以上一个月的耐用品订单总额，然后乘以100%。如果结果为正数，说明本月的耐用品订单总额高于上一个月，制造业活动有所增加；如果结果为负数，则说明本月的耐用品订单总额低于上一个月，制造业活动有所减少。

耐用品订单月率对市场有重要影响。如果耐用品订单月率出现大幅增长，说明制造业活动正在加速增长，这可能预示着经济增长的加速。相反，如果耐用品订单月率出现大幅下降，说明制造业活动正在放缓或萎缩，这可能预示着经济衰退的风险。因此，耐用品订单月率是市场观察家们密切关注的经济指标之一。

【英文版】

The Durable Goods Orders Monthly Change Rate refers to the percentage change in the total value of durable goods orders from one month to the next. This indicator is commonly used to measure the activity level of the manufacturing industry, as durable goods are items that can be used for a long time and have high value, such as automobiles, machinery, computers, etc.

The calculation method of the Durable Goods Orders Monthly Change Rate is to subtract the total value of durable goods orders of the previous month from the total value of durable goods orders of the current month, then divide it by the total value of durable goods orders of the previous month, and finally multiply it by 100%. If the result is positive, it means that the total value of durable goods orders of the current month is higher than that of the previous month, and manufacturing activity has increased; if the result is negative, it means that the total value of durable goods orders of the current month is lower than that of the previous month, and manufacturing activity has decreased.

The Durable Goods Orders Monthly Change Rate has an important impact on the market. If there is a significant increase in the Durable Goods Orders Monthly Change Rate, it means that manufacturing activity is accelerating, which may indicate an increase in economic growth. Conversely, if there is a significant decrease in the Durable Goods Orders Monthly Change Rate, it means that manufacturing activity is slowing or contracting, which may indicate a risk of economic recession. Therefore, the Durable Goods Orders Monthly Change Rate is one of the economic indicators that market observers pay close attention to.