| 摘要 |
A clay pigeon target disc 1 has a main body 7 with a surface 2. The surface 2 has at least two openings 3. When the target is in flight, air passes through the openings into indentations 6 and passageways 8, which may cause sounds such as whistling to emanate from the disc 1. The sounds may be tuned so that they replicate bird sounds. |
