lifting linkage

例句：

1. 1. The new elevator has a lifting linkage that makes it easy to move heavy items up and down the stairs.
   新电梯的升降机构使得搬运重物上下楼梯变得容易。
2. 2. The robot's lifting linkage is designed to pick up objects from the ground without any contact.
   机器人的升降机构设计成可以无接触地从地面捡起物体。
3. 3. The engineers used a sophisticated lifting linkage to lift the heavy equipment onto the construction site.
   工程师们使用了复杂的升降机构将重型设备吊装到施工现场。