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平均数的计算公式
- 主演： 成奎安 相武紗季 郑龙
- 状态：高清
- 导演：豪沃得·豪尔
- 类型：电影
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简介：There are three types of Folang machines: large, medium and small. They are made of copper or iron. Dayang Folang has a body length of 285 meters and a weight of 700 kilograms. It is called a general. It is said that a huge cannon weighing 3,000 kilograms was once cast, and its range is comparable to the Hongyi cannon.