二十八、两枚尖首刀如何归类?上世纪80年代之初,在北京见到10余枚尖首刀。其中的两枚锈色包浆相同,为同出之物。但由于有一枚为减重之物,外形相差较大。但二者有一重要的共同之处,即刀首刃部是向外微凸的。已知尖首刀首部是平直或微凹,首部刃微凸的外形,使这两枚尖首刀无处归类。较长大的一枚,在背面有隐约的外郭,所以不会是残损造成的假象。 Twenty-eight, two pointy knives how to classify? The early 1980s, saw more than 10 pointy knives in Beijing. One of the two rust-colored pulp of the same, for the same thing. However, because there is a weight loss for the object, the shape difference between the larger. But the two have one important thing in common: the knife blade edge is convex outwardly. Known sharp first blade is flat or slightly concave head, convex shape of the first edge of the knife, so that the two pointed knife no place to categorize. Larger one, in the back of a faint outer Guo, it will not be illusion caused by damage.