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[问题求助] 实验室温度湿度应该控制在什么范围内?
P:2014-01-08 11:19:37
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<div>Ambient temperature conditioning Before determination of the cross-sectional area, all test pieces shall be protected from direct sunlight and maintained for at least 3 h at a temperature of (23 ± 5) °C, except for thermoplastic insulating materials which shall be kept at (23 ± 2) °C.</div>
[billma 在 2014-1-8 12:08:25 编辑过]
circuit-switching - 电路开关,电路交换 (0) 投诉
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