牵引

Tractor drawbar and noise test play an important role in theoretical study, performance analysis, quality appraisal of tractors.

拖拉机牵引和噪声试验是对拖拉机进行理论研究、性能分析以及对新产品作定型鉴定的最主要试验项目。

Drawbar power of electric power engine is great.

电力机车牵引功率大。

The effects of drawbar length, articulation joint position on path following performance are investigated using parameter analysis method.

采用模型参数化分析方法，讨论了牵引杆长度、主车与拖车和拖车与拖车的铰接点位置对主车与拖车轨迹同辙性的影响。

The Y-frame drawbar is constructed from two solid beams that can bear more loads.

牵引架为Y字型实心梁结构，能承受更大的负荷。

This paper uses the ADAMS software to set up a dynamic model of tractor-trailer combination consisting of one tractor and five trailers with a total of 13DOF. The effects of drawbar length, articulation joint position on path following performance are investigated using parameter analysis method.

本文应用机械系统分析软件ADAMS建立了由一节牵引车和五节双轴转向拖车组成的汽车列车系统13个自由度的动力学模型，采用模型参数化分析方法，讨论了牵引杆长度、主车与拖车和拖车与拖车的铰接点位置对主车与拖车轨迹同辙性的影响。

In this paper, the marshland of Daxinganling forest region is classified into three kinds, the pass performance of three kings of crawler fire engine, J-50, A531, BFC804 and a kind of two-wheeled forest fire engine of special light-duty HS-8 is studied in theory and test, the calculation formulas of the tangential traction force and the external motion resistance of vehicle are given and the drawbar pull is used as evaluation index.

对大兴安岭林区的沼泽地进行了分类，并对3种履带式森林消防车J-50、A531、BFC804和一种特轻型双轮森林消防车HS-8的沼泽地通过性作了理论与试验研究，给出了切线牵引力和行驶阻力的计算公式，采用挂钩牵引力作通过性评价指标。结果表明，BFC804可以通过重沼泽地，A531和HS-8可以通过中沼泽地，而J-50只能通过轻沼泽地。

The drawgear of the tractor-trailer combinations has been designed by means of flexible drawing technique.

在此基础上，对挂接车辆的柔性牵引装置进行了总体结构设计，并对其中的弹簧～阻尼器单元进行了技术设计。

Objective:To explore the clinical application value of outward drawstring in allied application of laparoscopic and choledochoscopic in choledocholithotomy.

目的：探讨外置牵引线腹腔镜联合纤维胆道镜治疗胆总管结石的临床应用价值。

Although the star strength is very weak, but so long as has the bigdipper towing, we never will be able to lower the head to the future,we will sing together under the dubhe starry sky make a sound oursong, only Jason which most will love for this life

虽然星星的力量很薄弱，但只要有北斗星的牵引，我们就永远不会向未来低头，我们一同在北斗星空下唱响我们的歌，只为今生最爱的杰

You are the poem, let me have the inspiration which expressed You are the song, sing my long Tibet's in heart note You are the picture, let me have the dream which spread wipes You are the clock, knock my tight lock heart door You are the wind raise ,ripples you are the rain moisten my withered heart door leaf you are the fire let me have the burning desire you are the flower split decide the opening you are the mountain solid arm let me in mine heart snuggle up to you are the prairie vast chest hug me, you are big shake the Tao sound are your palpitation rush ,you are the dubhe tow I to lead the way the direction ,you are the rainbow let see the seven colors of the spectrum ray, you were the sun I bathe in the light are demented, you are the moon warmly caress my delightful dreamland I to rush to you: Herds in your vast chest snuggles up to listen to your pulse in your solid arm to shake, you are my illusion reposes, you are my mind relay station you are my soul companion ,you are in my heart spouse.

你是诗、让我有了抒发的灵感。你是歌、唱出我久藏在心中的音符。你是画、让我有了涂抹的梦想。你是钟、敲开我紧锁心门。你是风掀起我心海的涟漪你是雨滋润我干枯的心扉你是火让我有了燃烧的欲望你是花绽定开放在我的心里你是山结实的臂膀让我偎依你是草原辽阔的胸膛把我拥抱你是大海震震涛声是你心跳的澎湃你是北斗牵引我前行方向你是彩虹让看到了七色光芒你是太阳我在光中沐浴癫狂你是月亮暖抚我甜美的梦乡我奔向你：在你辽阔的胸膛放牧偎依在你结实的臂膀听你脉搏的震荡你是我梦幻的寄托你是我心灵的驿站你是我灵魂的伴侣你是我心中的爱人

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。