Once completed, the core system is dismantled and lowered down the structure by cranes, either externally or through empty lift shafts.
一旦完成，核心系统将被拆除，并由起重机从外部或通过空的电梯井下降到大楼地下。
Lift shaft
原声例句
B1M建筑科普
英语百科
Elevator
An elevator (US) or lift (UK) is a type of vertical transportation that moves people or goods between floors (levels, decks) of a building, vessel, or other structure. Elevators are generally powered by electric motors that either drive traction cables or counterweight systems like a hoist, or pump hydraulic fluid to raise a cylindrical piston like a jack.
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