| 摘要 |
FIELD: agricultural; beekeeping. ^ SUBSTANCE: device is essentially plastic cup whose inner surface is part of ellipsoid of rotation with hole in bottom. Hole is made in form of cylindrical thin-walled branch pipe with circular bead abutting inner surface of dish. ^ EFFECT: increased reproduction of bee colonies, honey, chyle and other products, reduced cost of queen raising. ^ 2 dwg |
