| 摘要 |
<p>A bottle, comprising a ground-contact part formed at the bottom part outer peripheral edge thereof, a center recessed part formed on the inside of the ground-contact part and recessed toward the inside of the bottle, an annular wall part formed between the ground-contact part and the center recessed par t and tilted so as to be gradually raised from the ground-contact part to the center recessed part, and a plurality of ribs formed on the annular wall par t parallel with each other in the circumferential direction of the bottom part , and projected to the inside of the bottle. Each of the ribs comprises a rise wall part rising to the inside of the bottle and a tilted wall part tilted from the upper edge of the rise wall part to the lower edge of the rise wall part of the adjacent rib. The rise wall part is tilted sharper than the tilt ed wall part.</p> |
