求翻译：　　一张好床的秘密首先在于床基，那么如何鉴别床基的优劣呢?首先要注意的是床板的质量，掀开床垫，我们会看到木质床板，若床板为薄板而非多层板，则床的质量明显不高，以多层矫型板及钢丝弹簧制成的床，具有厚重的质感而无任何噪音，属于优质的床基。是什么意思？

　　A Zhang good bed of secret first is bed base, so how identification bed base of merits does? first to note of is baseplate of quality, opened mattress, we will see wood mass baseplate, if baseplate for thin and non-multilayer plate, is bed of quality obvious not high, to multilayer straightening type plate and the wire spring made of bed, has heavy of texture and no any noise, belonging to quality of bed base.