求翻译：1983年，在湖北江陵马山5号墓中出土了一件吴王夫差自用青铜矛，全长29．5厘米。矛身与剑身相似而较短，中线起脊，两面脊上均有血槽，血槽后端各铸一兽头。骹（又称（上竹下角），为装柄之用）中空。骹口扁圆，口沿内凹。矛体满饰菱形几何暗纹。基部有两行8字错金铭文：“吴王夫差自作用鈼。”据专家考证，鈼为矛属刺兵器。由此可知，此为吴王夫差自用，此矛冶铸精良，保存完好。是什么意思？

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In 1983, in Hubei Province, Gangneung No. 5 in the tombs have been excavated from a king of Wu, poor self-bronze spears, full-length 29.5 cm . Spear and Sword are similar and a shorter line, with both sides, and on the spine are a blood bin after bin, blood-beast of a cast. 骹 (also known as (bamboo

In 1983, unearthed Wu Wangfu the difference has used for oneself the bronze spear in the Hubei Jiangling masan 5th grave, the span 29.5 centimeters.But spear body with sword blade similar short, the median line gets up the keel, on both sides keel has the blood trough, behind the blood trough casts

In 1983, in jiangling, Hubei tomb unearthed in Wu Wangfu, Mashan 5th worse use bronze spear, a 29. 5 cm. Spear and sword are similar but shorter, Middle Ridge, on both sides of ridges with blood Groove, blood end after casting a beast head. Pastern (also known as the (bamboo on corner), and Haft) ho