传动

Besides it keeps the feature of the former PG-2C that the diametric transmission power the feature of the former PG-2 that the diametric transmission power of the throwing-pan all exceeds that of domestic products of the same kind, it adds the waterworks for the uses of dilution and cooling when polishing with the advice and demands of numerous people who use it.

PG-2C金相试样抛光机是对PG-2金相试样抛光机的不完善处进行针对性的设计改进，该机除保持原PG-2的抛盘直径与传动功率均大于国内同类产品外，结合广大使用人员的建议和要求，增加了在抛光时作稀释冷却用的供水系统和易清污的抽屉式积污匣，并该机的外形更新颖美观，对设备的使用和保养也更为方便。

With the development of microelectronic technology, digital recording instruments appear in the recent years.

传统的记录仪表是一种模拟的、机械传动式的纸质记录仪表。

AC-DC-AC dirve technique. due to the obvious advantages of its application in locomotives andmotor coach,has been widely used in the railways all over the world since 1970s. This has become a tendency.

交－直－交传动技术应用于机车动车具有明显的优点，70年代以来被世界各国铁路广泛采用，已形成一种趋势。

Swithced reluctance machine is a new structure of electromotor. Combining this new structure with the modem power electronics technique and modem control technique, swithced reluctance drive has been one of the pop issues of the development of modem electric dirve.

开关型磁阻电动机调速系统融开关型磁阻电动机与现代电力电子技术、控制技术为一体，兼有异步电动机变频调速系统和直流电动机调速系统的优点，已经成为当代电气传动发展的热门课题之一。

The nonlinear sliding mode controller is taken as an example, the implementation form of δ operator discretization control, the error analysis and the algorithms stability are studied both theoty and engineering application.

数值仿真表明，当高速开关阀的节流孔流量系数、摩擦片的磨损量、摩擦系数、传动系的弹性系数等因素在允许范围内变化时，滑模控制器的跟踪误差远低于一般的PID控制器。

Features: Top speed: 30-32 mph Weight: 36 lbs Max Weight: 200lbs Drive System: Chain Suspension: Rear swing arm Engine: 42cc 2 Stroke Starting: Pull Start Fuel Mixture: 32:1 (2-cycle oil) Fuel Capacity: 1.5 Liter Running Time: 1.5-2 hrs Transmission: Automatic Brake System: Hand lever operated rear disk brake Wheel Type: 11x 4 ply Pneumatic on Aluminum 2 piece rim Available in: Black, Blue and Red.

性能： 最高速度：每小时30-32英里重量：36磅最大重量：200磅传动系统：链条悬挂系统：后摆杆发动机：42cc 2冲程启动系统：推动启动气油比：32：1 燃油容量：1.5升续航能力：1.5-2小时变速箱：自动制动系统：手动连杆，后置碟式制动车轮型号：11英寸4层充气轮胎铝合金2幅轮辋可选颜色：黑、蓝、红

The Finite Element Method is used to implement the numerical simulation on the model, and the rule of temperature distribution and the relations between screw deformation and temperature are obtained.

应用有限元法(Finite Element Method， FEM)对该模型进行数值模拟，得到滚珠丝杠传动过程中的温度场的分布规律以及温度对丝杠变形的影响关系。

For the production of double boiler industry cycloid arc Gear series, double-arc cycloid involute gear tooth series, double cycloid arc Gear three series reducer is the slowdown in industry experts examine bodies comprehensive demonstration of the industry Reducer various features of the design of new models, it has a reduction ratio, low noise, high efficiency, long life, small size, light weight, style, new structure is simple, reliable transmission, less power consumption, easy operation and maintenance, and other characteristics, Is designed for the boiler industry with stereotypes products.

专为锅炉行业生产的双摆线圆弧齿齿轮系列，双摆线圆弧齿渐开线齿轮系列、双摆线圆弧齿行星三轮系列减速机是经减速机构行业专家考查论证综合各行业各种减速机特点设计的新机型，它具有减速比大、噪音低、效率高、寿命长、体积小、重量轻、样式新颖结构简单、传动可靠、耗电少、易操作维修等特点，是专为锅炉行业配备的定型产品。

The use of pre-used triangular belt transmission, the power machine spindle and pumps must be parallel to pulley alignment, in which the center distance of not less than the diameter of the pulley and two double.

使用前的准备①采用三角皮带传动时，动力机主轴和水泵必须平行，皮带轮要对齐，其中中心距不得小于两皮带轮直径之和的两倍。

Powder metallurgy gears include: bevel gear, dual-gear, gear box gears, planetary gears, ring gear, rack, sector gears, bevel gears, spur gears, sun gear, helical gear, gear shaft, flat gears, spur gears, double layer gear, synchronous pulley, helical gear, sprocket, ratchet, multi-gears, micro-gear, small modulus gear, special gear, differential bevel gear, reducer gears, variable speed gear motor, all kinds of precision gears.

粉末冶金齿轮包括：伞齿轮、双联齿轮、齿轮箱齿轮、行星齿轮、齿圈、齿条、扇形齿轮、锥齿轮、直齿轮、太阳齿轮、斜齿轮、齿轴、平齿轮、正齿轮、双层齿轮、同步轮、皮带轮、螺旋齿轮、链轮、棘轮、多层齿轮、微型齿轮、小模数齿轮、异形齿轮、差速伞齿轮、减速机齿轮、变速电机齿轮、各类精密传动齿轮。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。