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The top three suppliers of crawler dozers to the North American market continue to be Caterpillar, Deere and Komatsu.

面向北美市场最大的三个履带式推土机供应商还是卡特、迪尔和小松。

By end use/application, the majority of crawler dozers are still being sold into the rental market, but demand has shifted slightly away from rental and toward other categories such as commercial and residential construction.

从最终使用情况看，大部分履带式推土机还是卖到了租赁行业，但是需求已经从租赁逐渐转向其他行业比如商业和民宅建设。

It provides sales, marketing, after-sale service and spare parts for Liebherr products mainly focusing on hydraulic and wheel excavators, loaders, dozers and mining equipments; tower cranes, crawler and mobile cranes; aircraft equipments like landing gear, actuators and air management systems.

公司负责的主要产品包括液压和轮式挖掘机、装载机、推土机和矿用自卸车；塔式起重机、履带式和汽车式起重机；起落架，作动器和空气调节与管理系统等航空设备等。

Large- sized crawler dozers normally have a set of claws called a ripper that is installed at the machine's rear end and can crush a hard rock.

通常大型的履带挖掘机尾后部会装有爪型的排状粗齿锯，用于碾碎石块。

Virtual Prototyping Technology in the field of engineering machinery can be applied: the crawler and wheeled vehicle stability, performance studies, hydraulic system, traction equipment performance prediction, bulldozers, excavators, forestry machinery, such as dynamic performance studies, spare parts and Engine load prediction and size determined, the driver field of vision research, prediction excavator needed to power, the efficiency of research, the reliability analysis.

虚拟样机技术在工程机械领域可应用的方面有：履带式和轮式车辆稳定性、操作性能研究，液压系统、牵引设备性能预测，推土机、挖掘机、林业机械等动态性能研究，零部件和发动机载荷预测与尺寸确定，驾驶员视野研究，预测挖掘机所需要的功率，工作效率研究，可靠性分析等。

We want to buy Generator, Air Compressor, Welder, Excavator, Wheel Loader, Boom Lift, Ligh Tower, Roller, Vibro Hammer, Crawler Crane, Welding Electrodes, Machinery and Equipment

我们要采购产生器，空气压缩物，焊接工，开凿者，轮子装货机，繁荣举起， Ligh 塔，滚筒， Vibro 槌，搜索器起重机，焊接电极，机器和设备

QUY650 crawler crane maturely applies key techniques, such as superlift control, twin-winch synchronous control, boom backstop control and double-hitch boom rising technique with powerful lifting performance. Super long main boom and jib and many combinations of working condition satisfy customer's requirements in the full extend.

QUY650履带起重机成熟运用超起控制、双卷扬同步控制、起重臂液压防后倾控制、双腰绳起臂等关键技术，具有超强的起重性能。

QUY650 crawler crane maturely applies key techniques, such as superlift control, twin-winch synchronous control, boom backstop control and double-hitch boom rising technique with powerful lifting performance. Super long main boom and jib and many combinations of working condition satisfy customers requirements in the full extend.

QUY650履带起重机成熟运用超起控制、双卷扬同步控制、起重臂液压防后倾控制、双腰绳起臂等关键技术，具有超强的起重性能。

QUY220 fully hydraulic crawler crane is equipped with multiple boom configuration including base boom, light boom, fixed jib and tower attachment, the maximum boom length for light boom is 96m, which with tower attachment is 117m, 3 boom offset angles match 99 boom combinations for tower attachment.

不完整，我来编辑QUY220全液压履带起重机具有多种吊臂类型配置，包括基本型主臂、轻型主臂、固定副臂和塔式副臂，轻型主臂最长达96米，加装塔式副臂可达117米，3种主臂角度配合99种臂架组合的塔式工况。

By comparison, sales of crawler loaders have grown 45 percent to an estimated 1,740 units in 2005- although this is still considerable growth in three years time.

相比之下，履带式装载机的销量增长了45%，达到预计的1740台，虽然在未来三年的时间里还会有可观的增长。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。