oor

In this paper , the accurate three dimensional wheel / rail model considering the wheel OOR is set up .

本文建立了考虑车轮不圆的精确三维轮轨模型。

Firstly , the effect of the wheel / rail geometric parameters on normal contact is analyzed for normal wheel without OOR .

首先，考虑车轮正常情况（无车轮不圆）下，通过改变轮轨几何参数，研究这些参数对法向接触的影响。

Based on rule based reason ( RBR ), a rule representation model is founded by Object Oriented Rule Model ( OOR ) .

基于RBR（基于规则的推理）技术，应用面向对象的规则模型（OOR），建立了动态装配规则的知识表示模型。

Keeping your lower back pressed into the fl oor , engage your core and lift your legs about 45 degrees .

下背部紧贴地面，锻炼核心肌群，双腿抬起约45度。

Oor product branded as " DUal Lion " is popular in USA , Canada , Italy , Russia , Hk .

“双狮”牌服装畅销美国，加拿大，俄罗斯，香港等国家和地区。

The principle of Qualitative and Quantitative Analysis of task based on OOR framework is expounded . Thirdly , the method of Task Qualitative Analysis based on OOR framework is put forward .

第三，提出了基于OOR框架的任务定性分析方法。

Keeping your knees slightly bent and your torso straight , slowly bend from your hips until your upper body is parallel to the oor .

背部挺直，臀部到上身前倾，直到身体几乎与地面平行、哑铃与双肩平行。

The obesity to overweight ratio ( OOR ) was 2 . 2 . [ Conclusions ] There are differences in the physical growth of children aged 0-5 years in gender and location in Beijing .

[结论]北京市0-5岁儿童体格发育存在性别和城郊差异；

All the dishes and silverware have been washed , dried , and put away ; the counter-tops cleaned ; the appliances sparkling ; the fl oor waxed .

所有的盘子和银制餐具都洗好、烘干、各归各位；厨具台面也清洁溜溜；每种用具都闪闪发亮；连地板都打了蜡。

The low order OOR will cause high amplitude stress with low frequency , and high order OOR will result in low amplitude stress with high frequency . The wheel OOR will directly lead to obvious change of the wheel / rail contact patches .

低阶不圆会产生低频次高峰值接触应力，高阶不圆会产生高频次低峰值接触应力，车轮不圆会导致接触斑外形发生明显变化。

With the rapid development of the China high-speed railways , several high-speed lines have been operated commercially . Since the speed of the train is up to300km / h , the vehicle dynamic performance is affected significantly by wheel OOR ( out of roundness ) .

我国高速铁路迅速发展，已正式运营多条高铁线路，列车速度达到300km/h，车轮不圆对车辆动力学性能影响愈加显著。