The gin pole is the simplest form derrick.
起棕吊杆是踊肿最简单的起棕机。
The gin pole is the simplest form of derrick.
安装方式:吊装式或吸顶式,吊杆,吊链。
The hoisting capacity of that gin pole (girder pole, guy derrick) is sixty tons.
那个起重抱杆(格状抱杆、转盘抱杆)的起重能力为60吨。
The hoisting capacity of that gin pole (girder pole, guy derrick) is sixty tons.
那个起重抱杆(格状抱杆、转盘抱杆)的起重能力为60吨。
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