封底上的号(读「国」)叔鐘,师趁鼎和博山炉,都是两三千年前的古物(请看封底插图)。这些青铜铸件结构复杂、花纹精致优美,是用「失蜡法」铸造的。从这三件青铜器可以看出,远在三千年前,我国的铸造技术就已经达到相当高的水平了。至于铸造开始年代还要早得多。我国古代铸造技术的卓越成就,不仅表现在青铜铸造方面,也表现在铸铁铸造方面;不仅表现在「神器」和佛像之类的铸件上,也表现在日常用具如铁锅、铁犂、铜镜、钱币以及兵器上。这些成就表现出了我国劳动人民的智慧。 The number on the back cover (read “Country”), the Shi Di Ding, and the Boshan Furnace are ancient artifacts two or three thousand years ago (see the illustration on the back cover). These bronze castings are complex in structure and exquisite in design. They were cast using the “lost wax method”. As can be seen from these three bronze wares, as far as three thousand years ago, China’s casting technology has reached a very high level. As far as the start of casting, it is much earlier. The remarkable achievements of ancient Chinese casting techniques have not only been expressed in bronze casting but also in the casting of cast iron; not only in castings such as “artifacts” and Buddha statues, but also in everyday utensils such as iron pots, iron plows, and bronze mirrors. , coins and weapons. These achievements demonstrate the wisdom of our working people.