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[国外标准] IEC 60754-2-2019 Test on gases evolved during combustion of materials from cables - Part 2 Determination of acidity (by pH measurement) and conductivity

P:2019-12-24 12:03:57

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liquid nitrogen - 液氮,液态氮 (0) 投诉

P:2023-09-14 15:39:46

2

有点贵

test of resistance to flammability - 耐燃性试验 (0) 投诉

P:2023-09-19 16:00:31

3

acceptance test - 验收试验,交接试验 (0) 投诉

3


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