gin pole短语¹⁴⁴⁹⁷²⁺² 基本例句 安装用起重架,起重把杆,中央立柱,桅杆 The key points of reversal installation, the lift system of oil tank, the gin pole using in reverse installation and chain block used in assembling gin/span> poles and molding bed are discussed in detail. 尤其对倒装法的施工关键—油罐的提升系统,对倒装时用抱杆、组装抱杆与胎模时用倒链作了详细的叙述。 dictall