They're also going to try selling you a "mattress protector" or "mattresspad."
他们还会极力把“床垫保护装置”或者“床垫加用护垫”推荐给你。
2
Compression: a mattresspad in the horizontal surface of the force applied vertically downward, causing the mattress by the force along the direction of surface displacement.
压缩量：在水平放置的床垫垫面上施加垂直向下的力，引起床垫表面沿受力方向的位移量。
3
We asked if there was another room or mattress or even a foam mattresspad available, but were told no.