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baicaizfl 发表于 2016-8-29 21:00 Z0 u. |3 l, y; `6 F# d9 J
湿布干一次热表面温度达到204摄氏度时断电2分钟,在这2分钟内换湿布,再等湿布干了热表面温度达到204摄氏 ... " ?9 s* b) p- b/ {- f
为什么是4次?标准上说是两次而已吧??" z5 N. h9 I3 U+ i, v0 F9 _1 D
标准原文: 44.1.19 An electrical heating element intended for application to the hair is to be loaded with a moistened cloth and then operated until the moisture has been evaporated and the heating surface of the unit has attained a temperature of 204°C (400°F). Following a 2 minute period with the unit disconnected, during which it is to be reloaded with another moistened cloth, the heating and evaporating operation is to be conducted a second time. The complete cycle is then to be repeated again. Temperatures are to be measured throughout the test. |
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