Inappropriate storage of samples 样品存贮不适当
Inappropriate storage of reference standard 对照品存贮不适当
The main factors for cable cracking are related to selection of cable compound and extrusion process. The cable cracking may be also caused by inappropriate application and storage of materials.
无卤低烟阻燃电缆的应力开裂影响因素主要与材料选用，工艺挤出有关，也与使用环境和储存条件不恰当有关。
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