There will be two slide projectors and screens in the room.该房间内将放置两套配有银幕的幻灯机。When the images line up exactly, the projectors should be fixed in place.图像完全对齐时,投影仪的位置就应该固定下来。The team tried projecting the maps with two different projectors onto the same screen.这个小组想用两台不同的投影仪把这些地图投射到同一个屏幕上。