作者: Bonnae C. Blake
DOI:
关键词: Engineering 、 Moisture 、 Hook 、 Composite material 、 Composite number 、 Loop (topology) 、 Mechanical engineering 、 Separable space
摘要: A composite bottom sheet or crib comprises a first moisture proof panel overlying the mattress with surface comfortable for user and second subjacent extending under during use. Hook loop fasteners intermesh on top of to connect two panels permit removal when soiled.