| 摘要 |
<p>The radiating reflecting or emitting material is between central axial tube and a jacket which surrounds it. It is under the pressure of compressed gas which delivers the material. The axial tube (10) has holes (18) at a distance from each other, and a source (20) of compressed gas is allocated to it. During operation gas flows out through the holes (18) and radially disperses the material (13, 14) after the movable jacket (5) is opened. The tube end is sealed by a piston (9) which fits into the axial tube (10) and is retained by a packing (7) with a sealing ring (8).</p> |
