提升机设计采用了曳引式传动和负力控制技术，关键部位采用双键控制技术，提升了安全系数。
The elevator design has used the haulage type transmission and negative strength control technology, the essential spot USES the duplet bond control technology, has promoted the safety coefficient.
提升机设计采用了曳引式传动和负力控制技术，关键部位采用双键控制技术，提升了安全系数。
The elevator design has used the haulage type transmission and negative strength control technology, the essential spot USES the duplet bond control technology, has promoted the safety coefficient.
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