| 摘要 |
PCT No. PCT/HU87/00034 Sec. 371 Date Jun. 3, 1988 Sec. 102(e) Date Jun. 3, 1988 PCT Filed Aug. 12, 1987 PCT Pub. No. WO88/01187 PCT Pub. Date Feb. 25, 1988.A flight distance of a competition javelin is improved and the tendency of the javelin to strike the ground leading point first by providing the javelin body so that it conforms to the competitive standards and by providing the body with surface roughening with a density of roughening points of at least 30 points/cm2 with a point height of substantially 0.1 to 0.5 mm. For men's competition the roughened surface is provided over a length of the body extending substantially 180 cm rearwardly of the grip. For women's competition, the entire surface of the javelin can be so roughened or the roughening can be provided only over a length of the body corresponding to the last 40 to 70 cm rearwardly of the grip.
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