The inflatablecushion not only has simple structure and low cost, but also is safe, and can bring great interest to children.
该装置不仅构造简单，成本低，而且安全能给儿童带来极大的兴趣。
2
A concatenation of inflatable cushions is prepared with each cushion comprising two thin films of a thermoplastic, at least one of which films has a generally central opening.