1·The design, prototype manufacture and technology of the semi spherical center plate pads are described.
介绍了半球状心盘衬垫设计、试制、工艺情况。
2·This standard includes ticking filled with a resilient material intended or promoted for sleeping upon, including mattress pads.
该标准包括计划或宣传用于睡眠的床垫或衬垫的填充材料。