古代,一种器物有多个名称;也有一种名称,而指多种器物。这种现象,在当时是很平常的,人们都能明白。不过,时间久了,情况有所变化。例如,同一名称,所指的不同器物,有的早已弃用,后人逐渐生疏,或者只知其一,不知其二,每有混淆,将同名而相异的 In ancient times, an object has multiple names; there is also a name, which refers to a variety of objects. This phenomenon, at the time is very common, people can understand. However, over time, the situation has changed. For example, the same name refers to the different objects, some have long been deprecated, future generations gradually unfamiliar, or just know one, I do not know the second, each with the same name and different