束紧驯鹿身上的挽绳，将礼物装上雪橇车，中欧和东欧大地一片银装素裹。圣诞老人将会给这个地区带来什么礼物呢？
THE reindeer are straining at the harness, the sledge is packed and snow is falling softly all over central and eastern Europe. So what should Santa bring the region?
结合SQ - 1200型无极绳连续牵引车，论述虚拟设计与制造技术的应用及其优点。
In this paper, SQ-1200 endless rope series tractor is used to discuss the apply and merit of the virtual design and manufacture.
对漳村煤矿基于PLC控制的绳牵引卡轨车变频调速控制系统提出了若干抗干扰措施。
This paper advances some measures for frequency control system of rope-tracting rail vehicles based on PLC in Zhangcun Coalmine.
应用推荐