拉力的

In rectilinear motion,the extremum of pullvaries with the factor;angleθ=α=arctgμ(μ:friction factor;angleθ:the angle between the direction of pull and the motion direction).

在直线运动中拉力 F的极值随摩擦系数μ的变化而变化，当θ=α=arctgμ(μ为摩擦系数，θ角为拉力 F和运动方向的夹角)时，F有极小

In consider drilling rod state, hole state, creep into course influence foundation of parameter synthetically, the drilling rodmodel under acting on the pulling force and torsion together carries on the theory to calculate, receive drillingrod pulling force and torsion differential equation group, in order to benefit drilling rod strength further to analyse.

在综合考虑钻杆状况、钻孔状况、钻进过程参数的影响基础上，对拉力和扭矩共同作用下的钻杆模型进行理论计算，得到钻杆拉力一扭矩微分方程组，以利于钻杆受力的进一步分析。

Standard gear actuators are sized to seat or unseat the valve with a rimpull requirement of less than 250 Ibs.

标准齿轮操作机构是根据启闭阀门所需的边缘拉力来选型的，适用于边缘拉力小于250磅的阀门。

From the view of initial deformation,the dual intercrossed iterative method is developed to determine the initial deformations of cables and hangers,sequential method based on initial deformations to simulate the tensioning process in batches,and converse iterative method in sequential anal.

本文从索初始变形的角度出发，针对该类结构的特点，提出了&双重交叉迭代法&确定拉索和吊杆初始变形，索初始变形&顺序分析法&模拟分批张拉施工过程以及索张拉力&顺序分析逆迭代法&解决张拉力已知时的预应力施工过程模拟问题，并将这三种方法进行不同组合，解决各种情况下的多次、分批张拉施工过程分析的问题，由此确立了一套完整的适合该类结构的预应力全过程分析方法。

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单手冲力达到20kg的爱好者。3， 21stx12x2适合双手拉力达到50kg。可运行时间达3000小时。抗冲击力达到50kg每秒。最高时速3000公里。单手冲力达到40kg的爱好者。产品遇火即燃烧。熔点176.2oC生成热-573KJ/kg。爆热5343kj/kg。燃点180oC。冲击感度8.0N/m水中不能放置超过120小时。绝不能放入装有浓硝酸和浓硫酸的液体中浸洗。更不能达到10分钟之危险行为的化学反应后爆轰。清洁应用清水洗涤。后凉干。产品设计有可以调动大小的活绳圈。手指在操作时穿进一转即被套紧。如不操作时。只要把手指左右转动一下便可以自动松开圈套。安全方便简单。纯天然没有任何至癌的化学染料和化学色素。在水溶液中达到一定时间可变色腐化的环保材质。在拉力范围外可拉断。的标准通用绳子。

SEM analysis indicated that the dispersive state of nature rubber latex was improved with the addition of organosilicone. The two batch formulas were adopted in the manufacture of urethral catheter with an optimal addition of 1.5% of KGF-903. The catheters were obtained with smooth surface, finer evenness, moderate hardness and favorable yield of latex sacculus. The separation forces between connector and the interface of conical drainage as well as the tensile force between gas loading filler and drainage tube were improved, which guaranteed the safety of Foley latex in clinic use.

利用小试的最佳配方(即KGF-903的添加量为1.5%)生产了2批次医用导尿管，其表面光洁度、导尿管球囊的成品率、管身硬度、连接器与导尿管排泄锥形接口所承受的拉力和充气漏斗与引流漏斗连接处所承受的拉力等均有显著的提高，有效改善了产品的质量。

SEM analysis indicated that the dispersive state of nature rubber latex was improved with the addition of organosilicone. The two batch formulas were adopted in the manu facture of urethral catheter with an optimal addition of 1.5% of KGF-903. The catheters were obtained with smooth surface, finer evenness, moderate hardness and favorable yield of latex sacculus. The separation forces between connector and the interface of conical drainage as well as the tensile force between gas loading filler and drainage tube were improved, which guaranteed the safety of Foley latex in clinic use.

利用小试的最佳配方（即KGF-903的添加量为1.5%）生产了2批次医用导尿管，其表面光洁度、导尿管球囊的成品率、管身硬度、连接器与导尿管排泄锥形接口所承受的拉力和充气漏斗与引流漏斗连接处所承受的拉力等均有显著的提高，有效改善了产品的质量。

The subjects of this study are 11 male high school tuggers(16.8±0.99 year old, 171.59±3.18cm, 70.14±2.65kg, trained for more than 2 years and having used the plyometric strength training machine of Tug-of-war for 8 weeks). We collected the related parameters of Defend Fast Break, and Attack Fast Break before and after the training for our study and tested it by " pair-data sample t test ".

研究的对象为11名优秀高中男子拔河选手，平均年龄16.8 ± 0.99岁；身高171.59 ± 3.18 公分；体重70.14 ± 2.65公斤；训练经历二年以上，并利用拔河增强式肌力训练机进行为期8周的增强式肌力训练，以拉力计（采样频率为600Hz；采样时间为5秒）收集个人分别在训练前、后防御起动步与攻击起动步之的拉力曲线相关参数，作为本研究之研究范围，并以成对样本t考验进行考验（α=。05）。

Q: Your father John is a former Rallycross driver, but the dad of which other of your F1 contemporaries was also a Rallycross racer?

问：你的父亲是一个前拉力车手，那么你知道和你同时期的 F1车手里面哪个人的父亲也是个拉力车手吗？

The initial tension in the rod is found out by iteration,so that the prestress of the rod reaches the design value.

通过简单的回代方法求出每根吊杆的初始张拉力，从而使得最终吊杆的预张拉力达到规定的设计值。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。