covered puts meaning in Chinese

有保护的卖权

An attachment or a covering put on a machine to protect the operator or a part of the machine
外壳机器上的附加装置或外罩，用以保护操作者或机器的某一部分
Acoustics - measurement of sound insulation in buildings and of building elements - laboratory measurement of in room impact noise by floor covering put in this room
声学.建筑物和建筑元件隔音测量.通过屋内地板覆盖物减少屋内撞击噪音的试验室测量