Passenger Dedicated Line (PDL) is a fast, safe, comfortable, low power, high-capacity new mode of transport, it break the competitive pattern among traditional air, road, rail transport modes.
客运专线是一种快速、安全、舒适、低能耗、大容量的新型运输方式，它的出现打破了传统的航空、公路、铁路三大运输方式竞争旧格局。
Conclusion Low energy laser radiation can accelerate the vascularized reaction in PDL of the removed teeth, which may promote the reconstruction of PDL and alveolar bone.
结论：低强度激光照射能促进兔正畸牙pdl的血管化反应，从而有益于正畸牙周组织的改建。
Double-block ballastless track applied on PDL is a new track structure. It is a low maintenance durable track structure with high stability, high geometric regularity and uniform track stiffness.
双块式无碴轨道是一种适用于客运专线的新型轨道结构，它具有高平顺性、高稳定性、刚度均匀性好、结构耐久性强和少维修的特点。
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