动力传动的

Based on the working condition of the tractor, a new type of electric tractor drive system which combines a motor and a gear, and the evaluation index and the calculation method for dynamic performance of electric tractor are suggested; taking an electric tractor drive system as design object, the balance graph of drive-resistance force, climbable gradient under different shifts, and continuous working time are calculation analyzed.

根据电动拖拉机作业特点，提出了一种电动机和变速箱相结合的电动拖拉机传动系统结构方案，并给出了电动拖拉机动力性能和经济性能评价指标以及电驱动系统主要参数的设计计算方法，以基于串励直流电动机的某型号小四轮电动拖拉机电驱动系统为设计实例，计算分析了该电动拖拉机的驱动力-行驶阻力平衡图、不同挡位下的爬坡度以及连续作业时间。

The second trend is continuate innovating of structure, material, processing technique, working accuracy and product quality. Both equipment reliability and viability increasingly high,and equipment weight increasingly lightness. Hydraulic dynamical bearings and static force bearings are widely applied in large-scale equipment, which bring mill smoother start-up and transmission than other bearings do. Fueling injection fittings are used to lubricate gears, which prolong gears' working lives.

近年来磨机发展的第一个趋势不再是磨机结构的大型化，而是从降低能耗和钢耗的角度来改善磨机工作性能；第二个趋势是不断改进结构，提高材质，完善加工工艺、加工精度、产品质量，设备的可靠性和耐久性越来越高，设备重量越来越轻，在大型设备中普遍采用液压式动力和静力轴承，使磨机的启动和传动更加平稳，齿轮润滑使用喷油装置，延长了齿轮的工作寿命。

ABB's gearless mill drives (giant motor and drive systems that power ore-crushing mills) are more reliable and energy efficient than traditional mill drive systems, and increase mill productivity.

ABB的无齿轮传动研磨机（为矿石粉碎机提供动力的大型电机和驱动系统）比传统的研磨机驱动系统更可靠，更具有能源效率，而且提高研磨机的生产率。

And productivity and calculate the card bore and make the lathe up to design including processing the process picture of the part, processed sketch map, lathe to contact size picture and and the calculated card of productivity, named " three pictures and one calorie " that usually spoken are designed; Many axle case part is it include many axle case design primitive drawing, main shaft choice and power calculate, design of transmission and calculate, etc., structure of form that basis pursue mainly to design.

粗镗组合机床总体设计包括被加工零件工序图、加工示意图、机床联系尺寸图和生产率计算卡，即通常所说的&三图一卡&设计；主轴箱部件设计主要包括主轴箱设计原始依据图的绘制、主轴结构形式的选择及动力计算、传动系统的设计与计算等。

And productivityand calculate the card bore and make the lathe up to designincluding processing the process picture of the part, processedsketch map, lathe to contact size picture and and the calculatedcard of productivity, named " three pictures and one calorie " thatusually spoken are designed; Many axle case part is it include manyaxle case design primitive drawing, main shaft choice and powercalculate, design of transmission and calculate, etc., structure ofform that basis pursue mainly to design.

粗镗组合机床总体设计包括被加工零件工序图、加工示意图、机床联系尺寸图和生产率计算卡，即通常所说的&三图一卡&设计；主轴箱部件设计主要包括主轴箱设计原始依据图的绘制、主轴结构形式的选择及动力计算、传动系统的设计与计算等。

The transmission system model of car is deduced.Considering the strong non-linear characteristics of system model and coupling effect on car dynamics between engine throttle opening and CVT ratio,the synthesized control algorithm which can keep car performance and fuel economy is given.

建立了汽车传动系统模型，研究了实现发动机最佳燃油经济性的算法，考虑到系统模型的强非线性特征以及发动机节气门与变速器速比对汽车动态性能的耦合作用，给出了保证实现汽车的动力性能和最佳燃油经济性的综合控制算法。

The engine block and heads of the V12, positioned at the ideal cylinder angle of 60 degrees, are made from aluminum. The four chain-driven camshafts are variably controlled, while the intake manifold operates in three stages – both technologies add even greater thrust to the merciless pushing power.

V12缸引擎的发动机组和汽缸盖，放置在60度的理想汽缸角度中，由铝型材料制成。4根链条传动式凸轮轴，当进气总管运转在第三级阶段时——其引擎潜力的增加将被&逼&到&无情&的最大动力。

The key components such as drive device, feed equipment and combination roll of coal briquetting machine were improved. The bridge-type synchronous gear-drive device was designed to implement the concession of driven shaft in order to protect the costly roll. The helixes feed equipment was used to improve the plasticity of material to ensure the strength of products.

采用过桥齿轮传动实现从动型轮轴的退让，以保护价格较高的型轮部件；采用螺旋强制给料机构提高成型前物料的密度和可塑性，以保证型煤成品的强度；采用型槽与型齿对应配置的型窝，在获得同样强度的型球条件下降低成型压力，减小动力消耗。

This utility model involved a sort of rotary tillage fertilizer distributor , belong to agricultural machinery ,it maked up of rototiller , fertilizer-discharged device and gearing ;the horizontal and uprightness packing auger are installed in the fertilizer-box and the fertilizer-discharged duct of fertilizer-discharged device ,the gear case connected fertilizer-box and fertilizer-discharged duct ,it is power transmission device and fertilizer discharged duct it can use kinds of powder and granular fertilizer this machine structured simple , fertilizer discharge reliable , and full used existing equipment

本实用新型涉及一种旋耕施肥机，属于农业机械，它由旋耕机加装排肥机构及其传动装置而成；其排肥机构的肥箱和排肥管中分别装有水平绞龙和垂直绞龙，联接肥箱和排肥管的齿轮箱，既是传递动力的纽带，又是排肥的通道可施用各种粉状和颗粒状化肥该机结构简单，排肥可靠，且充分利用了现有机具

The response is even more spontaneous thanks to the decidedly sporty engine and transmission control unit and the direct through-drive in the powertrain.

的反应更是自发的感谢果断的运动引擎和传动控制的单位和直接通过驱动的动力。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。