轮

And the grasp features of the combined numerical cyclist dummy's hand is determined by simulation experiments, highlighting the interaction force between the cyclist and the two-wheeler, the driving inertia of the two-wheeler, the coupling force between the tyre and the ground, and thus set up the human-vehicle-road coupling system simulation model.

通过仿真试验确定组合式骑车人数值仿真假人的手部抓握特性，突出骑车人与两轮车之间的相互作用力，两轮车的行驶惯性和其轮胎与地面之间的耦合力，从而建立了骑车人-两轮车-路面耦合系统仿真模型。

In this system,we define the left wheel as the norm wheal,the right is the differential wheel,controlling the benchmark wheel is to controll the speed,another one is to reduce the friction between the wheel and the ground when turning steer.so as to make the wheel purely rolling.

电动汽车电子差速系统中的左轮定义为基准轮，右轮定义为差动轮，控制基准轮转速是为了控制电动汽车的运行速度，控制差动轮转速是为了减小电动汽车转向时汽车车轮的滑动摩擦，尽量使电动汽车车轮运行在纯滚动状态。

08 RI President Wilfrid J. Wilkinson and wife, Joan, join in the chorus with other Rotarians who sang "California, Here We Come" to promote next year's convention in Los Angeles.

2007-08年度国际扶轮社长伟福瑞E魏京森和妻子琼，与其他扶轮社社员一起合唱，"我们来到加利福尼亚这里"，来宣导下一年度在洛杉矶的国际扶轮年会。

The 2008-09 theme challenge to reduce the child mortality rate is a tall order, RI President Wilfrid J. Wilkinson told incoming district governors at the International Assembly yesterday, but by working within the framework of Rotary's emphases set by RI President-elect Dong Kurn Lee, it's a goal worth achieving.

国际扶轮社长魏京森在昨天的国际讲习会中对下届地区总监们表示，2008-09主题是向降低儿童死亡率来挑战，那是件高难度之要求，但在国际扶轮社长当选人李东建所设定之扶轮重点强调的架构中来运作，那是一个值得我们去完成的目标。

Ceramic grinding head, resin cement, rubber cement, sponge round, wool grinding head, diamond grinding head, cutting, grinding December. sandpaper machine, sand sets Belt, Wheel, cloth round, wire cut and cut copper wire, nylon to cut, drill, Dental and polishing tools for health and beauty Wheel dedicated abrasive.

8A71 陶瓷磨头、树脂磨头、橡胶磨头、海棉轮，羊毛磨头，金刚石磨头，切割机，研磨腊，砂纸机，砂套，砂带，抛光轮，布轮，钢丝削，铜丝削，尼龙削，钻头，抛光工具以及齿科专用砂轮和美容保健专用磨具。

The obstacle (the altitude of 900 mm) process for both sides of a planetary gear train was analyzed in ADAMAS. It is proved that the physical dimension of the planetary gear train, bodywork center position and attachment coefficient are the key effect factors. The driven moment, velocity and normal pressure sharply increased as each wheel surmounting obstacles, but they were moderate after the front wheel came over the obstacles. Another weaker pulse occurred when the rear wheel began climbing, and then the parameters reached a plateau.

行星轮系的结构尺寸、车体质心位置及附着系数对越障高度影响较大；各轮系越障时出现驱动力矩、速度和正压力急增的现象，前轮系的前轮越上障碍后，各参数值趋于平稳，后轮越障时又出现瞬时脉动，但脉动较小，后轮系也有相同的变化趋势，各轮的阻力矩和输出功率与正压力变化趋势相同。

On the basis of analyzing the characteristics of new typed FA planetary transmission of cycloidal needle-wheel, a set of force bearing analysis theory of tooth surface with the modification of tooth profile of cycloidal gear was put forward.

在分析FA新型摆线针轮行星传动特点的基础上，提出了一套摆线轮齿形修形下的齿面受力分析理论，并采用MARC工程软件对针齿和摆线轮齿面的接触状态进行了有限元分析，结果证明了受力分析理论的正确性。

The representation of both the addendum and dedendum circles on meshing points is as follows: Driving wheel teeth are visible, drawn in thick lines.

啮合区齿顶圆的画法是：将主动轮的轮齿作为可见，画成粗实线，从动轮的轮

With higher content of β-carotene. The length and width of perianth segment(inner 2 ring) were osculant, the former showed matroclinous inheritance, the latter showed patroclinal inheritance, so Liriodendron interspecific hybrids with bigger perianth segment could be selected by Liriodendron chinense?

杂交鹅掌楸内两轮花被片长度和宽度为双亲中间型，分别偏向母本和父本，用内两轮花被片较宽的鹅掌楸作母本，内两轮花被片较长的北美鹅掌楸作父本，有望选育出大花的杂交鹅掌楸个体。

Calyciflorus clones were cultured at 15℃, 20℃, 25℃and 30℃with 3.0×106 cells/mL of Scenedesmus obliquus to investigate their differences in life history characteristics and their responses to increasing temperature.

结果表明，温度对萼花臂尾轮虫存活率和繁殖率的影响在不同克隆间存在着差异。20℃和25℃下，四个克隆轮虫的世代时间和净生殖率均分别无显著的差异；20℃、25℃和30℃下，四个克隆轮虫的平均寿命和出生时的生命期望亦然。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。