牵引

The computation model of two-point contact (for cone-tread) and conformal contact (for worn-tread) resulting from wheel flange close to rail is firstly established in this paper. A detailed analysis is made of the wheel/rail contact force, contact status and wheel/rail stress distribution on the different action of tractive forces and transverse forces. We draw some important conclusions, one of which is that the locomotive adhesion performance will decrease with the increase of transverse forces between wheel and rail.

本文建立了车轮轮缘贴靠钢轨形成的轮轨两点接触和共形接触的计算模型，对不同的牵引力矩、不同的横向力作用下的轮轨接触力、接触状态和轮轨应力分布进行了详细的分析，得出了轮轨间横向力增大会降低机车粘着性能等一系列重要结论。

Autumn will do, cold rain slightly cold, the rain outside the window is a gurgling, Ringing in the rain curtain, like fallen leaves Piaofei, it seems quiet night flyings; lamp is Qingqing of tea, a touch of books and poetry so rich, so that state of mind blowing , then let me and the poetry of traction with the ancestors, dial cloud wearing fog, rain to experience what that is, actually improves their days are short, allowing nights are long, people can be singing through the ages.

秋日将尽，冷雨微寒，窗外是潺潺的雨声，萧萧的雨幕，象落叶飘飞，似静夜飞花；灯下是清清的茶水，淡淡的书香，令诗情浓郁，让心绪飞扬，那就让我且随先人诗词的牵引，拨云穿雾，去感受雨为何物，竟能使昼短，能让夜长，能被人千古吟唱。

As a result of the Act of traction roll the business card printing and membership card materials to a certain speed, tension from the pull-out feeding axis and force it into the business card printing and membership card Studio, this part of the tension than business card printing and membership card Studio tassion, usually linked to 纸轴 to control the brake on tensility.

由于牵引辊的不静息把制卡和会员卡制息质料以必定的速率、压辛从给料轴拉不入并送入制卡和会员卡制息部，这局部的压辛给不小于制卡和会员卡制息部的压辛，凡是用不断在给纸轴上的制不静器来把持压辛。

As a result of the transmission of traction roll will to a certain speed, tension from the pull-out feeding axis and force it into the business card printing and membership card Studio, this part of the tension than business card printing and membership card Studio tassion, usually attached to a feeding on the axis of brake to control tensility.

由于牵引辊的传不静不兵塑料薄膜以必不退的不缓率、压辛从给料轴拉不入并送入制卡和会员卡制息部，这局部的压辛给不小于制卡和会员卡制息部的压辛，凡是用不停在给料轴上的制不静器来把持压辛。

The problem of capacity selection of three-phase to four-phase transformer used in electric railway is analyzed. Because of the better structure and balance characteristic compared w...

与其它牵引变压器相比，三相变四相变压器具有较好的结构和平衡特性，可以用于电气化铁路 AT 供电。

Just like a frog dragged by the crab from the East Sea out of the deserted well, facing such a vast ocean, I was much shameful for having been content and proud to live in so narrow a well, for the real endless ocean was what I had longed for, so my heart got boiling and swelled by the surfing sea...

我像是化为了一只井底之蛙在东海之螯的牵引下跳出废井，面对大海，我惭愧不已。回想自己满足于如此狭小不堪的枯井还自以为是，然而真正的博大，浩瀚无垠的海洋才是我的向往。我的胸中沸腾了，弥漫着鼾息声的大海将我的心膨胀。。。。。。

The affected factors of the city's layout mainly lie in the natural conditions, the weak developing fundaments and limited infrastructures, but it has the obvious city developing incentives of the fruits sources, township businesses and comprehensive agricultural development.

影响城镇空间格局的因素主要是自然条件的制约、城镇发展的基础脆弱及区域基础设施的牵引等，但浦北县城镇发展的动力较明显，具体表现为水果资源动力、乡镇企业动力、农业综合开发动力等。

In terms of technology and worldwide market share, we are the No. 1 manufacturer of rope driven transport systems: aerial tramways - detachable gondolas funiculars/inclined elevators - automatic people movers fixed and detachable chair lifts - surface lifts for skiing material ropeways - and other related products Doppelmayr International built more than 9,000 ropeways; together with all other members of the Group the total is more than 13,700 ropeways in 78 countries all over the world .

我们在缆索牵引运送系统的技术和市场份额方面均为世界第一，可以提供以下系统：架空往复式索道-脱挂式吊厢索道轨道缆车/斜升电梯-自动人员运送系统脱挂式和固定式吊椅索道-滑雪拖牵索道货运索道-其他相关产品多贝玛亚公司已经建造了 9，000 多条索道/缆车系统，加上集团其他成员的业绩，已经在全球 78 个国家和地区建造了 13，700 多条索道/缆车系统。

Manufacturer of rope driven transport systems:aerial tramways - detachable gondolas funiculars/inclined elevators - automatic people movers fixed and detachable chair lifts - surface lifts for skiing material ropeways - and other related productsDoppelmayr International built more than 9,000 ropeways; together with all other members of the Group the total is more than 13,700 ropeways in 78 countries all over the world .

我们在缆索牵引运送系统的技术和市场份额方面均为世界第一，可以提供以下系统：架空往复式索道-脱挂式吊厢索道轨道缆车/斜升电梯-自动人员运送系统脱挂式和固定式吊椅索道-滑雪拖牵索道货运索道-其他相关产品多贝玛亚公司已经建造了 9，000 多条索道/缆车系统，加上集团其他成员的业绩，已经在全球 78 个国家和地区建造了 13，700 多条索道/缆车系统。

It improves the car's performance when traction is lost by braking the wheel that loses grip.

它提高了赛车的性能是由牵引制动车轮失去抓地力的损失。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。