非对称双塔连体结构比对称双塔连体结构的扭转振型和耦合振型要多，振型也更为复杂；
The twist and coupled modes of the asymmetry twin-tower connected structures were more complicated than the symmetry ones.
DGX- 90型，适合各多类工程机械用螺帽与内芯连体，以及管套与内芯连体扣压。
DGX-90 type suitable for all types of engineering machinery nut and inner core Siamese, and the withholding of tube sets and inner core Siamese.
DGX- 90型，适合各多类工程机械用螺帽与内芯连体，以及管套与内芯连体扣压。
DGX-90 type suitable for all types of engineering machinery nut and inner core Siamese, and the withholding of tube sets and inner core Siamese.
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