hand chain hoist
手拉葫芦英语翻译例句
Upside-down method using hand chain hoist for the installation of steel oil tank with an inner floating drum
手拉葫芦提升倒装法制安内浮顶钢制油罐
手拉葫芦英语翻译例句
Upside-down method using hand chain hoist for the installation of steel oil tank with an inner floating drum
手拉葫芦提升倒装法制安内浮顶钢制油罐