| 摘要 |
<p>The building wall panel comprises two cellular sub-panels which are bonded together by abutting major faces. One sub-panel incorporates a sheet (1) with undulations or discontinuity lines in a definite direction. The counter panel is of a similar construction with the undulation in the perpendicular direction. The undulating sheets (1, 2) together with the dividing (3) and facing boards (4, 5) may be bonded together to form an integrated panel. One of the facing boards may be perforated with the holes forming wave traps, and discontinuity lines may be formed by grooves.</p> |
