查询词典 rolling friction

The ground beneath the canopy itself is a rolling landscape of velvet moss and ferns.

在林冠之下的地面有着被苔藓与蕨类植物所点缀的高低起伏的地势。

Electro Hydraulic Servo Valve is key component in roll load system of aluminium foil rolling mill.

电液伺服阀是铝箔轧机压上电液控制系统中的关键零部件。

First, the thesis has discussed the position of the rolling mill of sharp steel in the national economy, and makes the general instruction for 300/500 unit plane arrangement.

首先，本文讨论了型钢轧机在国民经济中的地位，并对300/500机组平面布置示意图的概况进行了整体的介绍。

The stigmas are near the tips of the upside down umbrella-shaped style. Once the pollinators push their way into the inner chamber, they have a jolly time rolling in the pollen and slurping the nectar.

柱头的位置接近倒伞形结构的尖端(可以参考原始网页的图，左边是一般植物的花，右边是瓶子草的)，当授粉者钻进腔内的时候，它们会在花粉间钻动，啜食花蜜。

This text is mainly about the mechanical hydraulic part design of WY type freight car wheel rolling bearing push mounting machine.

本文主要是针对WY型货车轮对轴承压装机的机械液压部分进行设计。

The central inner gear theory equation and tooth profile work equation with two-teeth difference cam profile rolling movable teeth were deduced, and in the consideration of central gear influenced by several parameters, the central gear tooth profile modification mode was analyzed and synthesized roundly.

推导二齿差凸轮激波滚动活齿传动的中心内齿轮理论方程及工作齿形方程，在给出考虑各参数影响的中心轮修形通用方程的基础上，较为全面地对中心轮齿廓的几种修形方式进行分析和综合。

Since our successful invention of the single-row ball slewing ring in 1984,which ranks in the international advanced level, we have also developed and produced three other types of slewing rings:three-row roller slewing ring,cross-rolling slewing ring and two-row roller slewing rings,altogether four types of slewing rings,amounting to more than 800 specifications.

公司生产单排球式、三排柱式、交叉滚柱式和双排球式四大系列的回转支承共八百多个规格，公司生产的回转支承系列产品批量出口到美国、加拿大、日本、意大利，东南亚和中东等多个国家和地区。2005年公司出口回转支承2099套，其中出口美国1774套，占公司全年销售量的13%。

Firstly, the paper introduced the working principle and device of the two-pass rotary kiln and had an analysis method of mechanics of the rolling ring.

首先，本文介绍了2档回转窑工作原理和装置，对滚圈的力学行为进行了分析，提出了基于筒体-窑衬-大齿圈-滚圈-托轮的回转窑整体建模，对滚圈-托轮的接触应力进行有限元分析的方法，并得到了滚圈接触应力的大小和分布规律，结果表明滚圈接触应力在一周内主要存在两个主要的峰值和突变，都出现在滚圈与托轮接触区域

According to the arrangement and number of rolls, rolling mills can be classified as various types: a two-high mill, a three-high mill, a fourhigh mill, a planetary mill and a cluster mill.

根据轧辊的配置和数量，轧机可分为各种类型：两辊式轧机、三辊式轧机、四辊式轧机、行星式轧机和多辊式轧机等。

The optimal turned-out slab pile problem is to d etermine N slabs from M related pile locations so that the total turned -out slab pile number can be minimized while the corresponding slab sequence re quirements of the rolling turn are satisfied.

最优倒垛问题是如何从M个相关的板坯垛位中选择N个板坯，在满足相应的轧制单元计划所需要的板坯序列要求的条件下，保证总的板坯倒垛次数最少。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48