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QTP-120 塔吊 tower crane

前排提示：游戏内的塔吊数据部分非现实数据，
部分建模细节比较差强人意（本人水平实在有限），请见谅。

游戏数据：
QTP-120 塔吊
游戏服役时间：1972-1995
游戏重量：16.6吨（~130吨）
游戏功率：87.2千瓦
起重机等级：80
游戏长度：16m（现实远不止这个长度）

塔吊厂家介绍（与游戏无关）：
上海交通大学，同济大学，上海市建筑科学研究所，上海市门窗加工公司，上海市机械施工公司等联合研发，上海市建工机械厂生产的机械
中国最早的三台自升塔式起重机中的一台，和同类型自升塔吊一样，后也用于一部分高层建筑的施工需求，但由于上世纪70年代建造绝大多数房屋的高度普遍不高，所以这类塔吊普遍不常见。（直到改开初期高层建筑的需求不断增加，这类自升塔吊才普遍出现在施工现场之中（直到最新的QTZ塔吊诞生之前））

本mod无任何现实意义的“政治宣传”或“商业用途”，仅仅是游戏mod

The tower crane data in the game is not real data,
Some of the modeling details are not satisfactory (my level is really limited), please forgive me.

Game data:
QTP-120 tower crane
Game service time: 1972-1995
Game weight: 16.6 tons (~130 tons)
Game power: 87.2 kW
Crane grade: 80
Game length: 16m (reality is much longer than this)

Introduction to tower crane manufacturers (unrelated to games):
Jointly developed by Shanghai Jiao Tong University, Tongji University, Shanghai Institute of Building Science, Shanghai Doors and Windows Processing Company, Shanghai Machinery Construction Company, and produced by Shanghai Construction Machinery Factory
One of the earliest three self elevating tower cranes in China, like similar self elevating tower cranes, was later used for the construction needs of some high-rise buildings. However, due to the fact that the height of most buildings built in the 1970s was generally not high, this type of tower crane was generally uncommon.It was not until the early stages of reform and opening up that the demand for high-rise buildings continued to increase, and this type of self elevating tower crane became common on construction sites (until the latest QTZ tower crane was born)

This mod has no practical political propaganda or commercial use, it is only a game mod