经过数千年缓慢腐蚀的青铜器，因为发氧量，使表面略有膨胀，比重下降，而伪铸品没有这一过程，就显得较重。另一方面，伪器的蜡模制造都略厚于原器，仿伪者往往未见原物，因而蜡胎的成型也未能如原器壁之薄，这是一个先天的毛病，因而伪铸之器一般都厚于原器，以上两方面因素叠加起来，伪品就明显地重于原器了。 After thousands of years of slow erosion of the bronze ware, because of the oxygen content, the surface slightly expanded, the proportion of the weight decreased, and the pseudo-cast did not have this process, it appears heavier. Pseudo device, on the other hand, the wax pattern manufacture are slightly thicker than the original, copy beggars often did not see the original, and wax tire molding also failed to thin wall of the original device, it is a congenital problems, thus pseudo casting is usually thicker than the original, the above two factors add up, falsify significantly heavier than the original organ. 　　伪器系新铸，经叩击后声音清脆，犹如新铜，而经过地下腐蚀较深的青铜器，铜质已属矿化，所以发音以浑浊者居多。当然埋藏在极其干燥而又纯粹的土层中的青铜器，敲击音也有甚佳的。 The spurious system is newly cast and the sound is clear and crisp after knocking, like new copper, and the bronzes, which are deeply eroded by underground, are mineralized, so the pronunciation is mostly cloudy. Of course the bronzes are buried in extremely dry and pure soil, and the percussion is also very good. 　　古代块范铸造的青铜器，表面光洁度好，纹饰甚至纤毫可辨，表面很少有气温孔，更少铜液灌注有到而产生缩孔的情况。而失蜡和翻砂铸造的伪器，经常在表面出现某些砂眼，有的甚至产生缩孔等铸造缺陷。如不了解这一点，很可能错误地以为砂眼和缩孔是旧铸的特点。 The bronzes made of ancient block casting are fine, fine and even slender, with very few temperature holes, and fewer copper liquid perfusion to produce shrinkage holes. However, the foreruner of wax and sand is often used to create the defects of some sand holes or even shrinkage holes. If you do not understand this, it is likely that the sand eye and the shrinkage cavity are the characteristics of the old cast.