flyman 发表于 2010-5-21 14:31

zhuzhu575 发表于 2010-5-21 15:16

flyman 发表于 2010-5-21 15:32

fasten 发表于 2010-5-21 15:39

(a) the test has been running for a minimum of 7.5 h; or
(b) the test has been running for a minimum of 3 h; and
(c) three successive readings taken at 15 min intervals are within 1 °C of one another and are
not rising.
看看其中的or和and。(a)是独*立的，(b)和(c)是相加的，3小时后每隔15分钟3个读数，即3h/3h-15min/3h-30min.不是刚好3.5小时吗？
不过为了确保温度稳定，3.5小时后再去读3个数也未尝不可，以免没有稳定浪费时间。

flyman 发表于 2010-5-21 15:44

kelvinwen 发表于 2016-8-22 14:48

fasten 发表于 2010-5-21 15:39 static/image/common/back.gif
(a) the test has been running for a minimum of 7.5 h; or
(b) the test has been running for a minimum ...

在UL153和UL1598上是这么规定的。
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