B. The mechanical mixing usually last 1 to 3 minutes, while manual mixing usually lasts 3 to 6 minutes (The longer time the solder pastes are kept, the longer time the mixing requires).

机器搅拌一般为1~3分钟，人工搅拌一般为3~6分钟（锡膏储存的时间越长，则搅拌时间越长）。

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B. The mechanical mixing usually last 1 to 3 minutes, while manual mixing usually lasts 3 to 6 minutes (The longer time the solder pastes are kept, the longer time the mixing requires).

机器搅拌一般为1~3分钟，人工搅拌一般为3~6分钟（锡膏储存的时间越长，则搅拌时间越长）。

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