floor cut造句

• Floor cutting - off machines - safety
  楼板切割机床.安全性
• Floor cutting - off machines - safety
  地板切割机.安全性
• If the drums will be set up on the floor itself , a carpeted floor cuts down on reflections ; a hardwood floor will allow sound waves to bounce back up into the drums , possibly causing phase cancellations
  如果鼓架在地板上，铺着地毯的的地板会阻止反射声；硬木地板会让声波向上反射回鼓组中，从而很可能引起相位消除现象。