该修订包括以下重大技术变更: -将可用体积重命名为计算体积，并修订计算体积的测量方法（见7.2），其符合IEC 60350-1； -第3条中微波功能、组合微波功能、设置为关闭模式、设置为待机模式、冷却期和食物支持的新定义； -根据条款14所述的用于测量微波功能的能量消耗的方法； -表2中对仪器和测量的更精确要求； -第15条中测量低功率模式能耗的附加产品特定要求； -附录F中的冷却期能耗测量方法（信息性）。

This amendment includes the following significant technical changes:
- the usable volume is renamed to calculated volume and the measurement method for the calculated volume is revised (see 7.2), which is in accordance with IEC 60350-1;
- new definitions for microwave function, combination microwave function, set to off mode, set to standby mode, cooling down period and food support in Clause 3;
- a method for measuring the energy consumption of the microwave function in Clause 14;
- more precise requirements for instruments and measurements in Table 2;
- additional product specific requirements for measuring the energy consumption of low power modes in Clause 15;
- a method for measuring the energy consumption for the cooling down period in Annex F (informative).