We compared the hot water process with the steam chamber process and found that the latter has the advantages of cost reduction and high productivity.

本文主要对水煮加热方式和蒸汽加热方式进行比较，认为蒸汽加热方式具有经济性好，生产效率高等优点。

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The roasting must be even, and the grinding process must be finely calibrated so that the resulting coffee allows smooth passage of the hot water that extracts the flavour.

ECONOMIST: Espresso coffee