按照 60335 的理解, 是有这种矛盾存在的.
可以借鉴
1. IEC 60950-1 章节 4.5.5
The test is made in a heating cabinet at a temperature of (T – Tamb + Tma + 15 °C) ± 2 °C, 还有,
2. IEC 61558-1 章节 27.1
at a temperature of (T + 15 ±2) °C where T is the temperature of the relevant part during normal temperature test.