jet foam monitor 泡沫灭火枪
He made another one, and it was a jet black shot of espresso with more than just a dollop of foam on top.
他为我做了一杯，那是一杯十分浓黑的意大利浓咖啡，在它的顶部是一大团泡沫。
This technology is different from chemical boil foam, high pressure water jet, medium frequency heated and other cleaning technology.
该技术不同于化学煮泡、高压水射流、中频加热等清洗技术。
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