At last, in 1947, the first commercial microwave oven hit the market.
最后，1947年，第一台商业用微波炉问世。
The microwave oven is a commercial microwave oven and comprises a body and an ozone-free high-performance negative oxygen ion generator;
它由微波炉主体和无臭氧高性能负氧离子发生器两部分构成；
Ketones and stabilized phosphorus ylides were heated together in commercial microwave oven, under solvent and medium free conditions, the Wittig reaction finished within 4.
酮与稳定膦叶立德在家用微波炉中加热，在无任何溶剂或固体介质条件下，4。
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