double lift

analyzing for the stability of the boom with double lift point to tower cranes

塔式起重机双吊点吊臂的稳定性分析

The double lift pipe in a 800 kt/ a catalytic cracking unit, including reaction – regeneration fractionation, absorption – stablization, waste heat boiler and gasoline mercaptan removal, was remoulded.

中国石油锦西石化公司采用石油大学与华东设计院共同开发的双提升管催化裂化技术，对80万t/a催化裂化装置反应$C再生、分馏、吸收稳定、余热锅炉、汽油脱硫醇等部分进行改造。

the double lift cylinder used here for control purposes permits the gas needle and the valve stem to be opened and closed separately.

为控制灌装过程，机器上安装了一个双冲程气缸，气针和阀锥的打开和关闭可以分开进行。

double lift double cylinder jacquard

复动式双花筒提花机

the present invention also discloses relevant double lift pipe catalytic cracking apparatus.

本发明还公开了相关的双提升管催化裂化装置。

it is easily moved to various cleaning sites with its double lift handles.

该设备中的双提升手柄，可将其置于各种清洁现场。

technical remoulding of double lift pipe in catalytic cracking unit

催化裂化装置二段提升管反应器技术改造