发布时间:2025-02-01 16:57:41
冰箱型号中的英文字母B、C、D、W分别代表什么意思
答:B:冰箱 C:冷藏 D:冷冻 W:无霜
作用:标识产品的特征、结构、功能。
好处:使购买者对产品的简单认识和初步了解。
中石化的河南油田调剖+降粘复合技术试验取得成功,这些技术有什么重要意义阿
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