Taking advantage of both , this paper choose t cross - section and enlarge detail dimension . the goal of optimum design is to increase torsion inertia moment and reduce shearing stress when moment of flexion and shear bearing capacity of single - beam is satisfied 综合二者之优缺点，本课题选取t梁截面形式，用增大其细部尺寸的方法，以提高抗扭承载力为目标，满足弯剪等承载力要求为约束条件进行主梁截面的优化。
Result mediopatellar plica syndrome had the following clinical symptoms : painful knee and mediopatellar tenderness in all patients ; tender bands in 56 . 7 % patients ; positive test of flexion or extension with internal femoral condyle pressed in 62 . 7 % patients ; positive mcmarry " s sign in 31 . 3 % patients 结果髌内侧滑膜皱襞综合征有以下主要临床表现: ( 1 )患者均有膝痛和髌内侧压痛； ( 2 )可触及痛性索条； ( 3 ) “压迫股内髁膝关节屈伸试验”阳性； ( 4 )麦氏征阳性。
The result indicates that improvement is helpful to enhance veracit y of calorimeter . when coal combusts in bomb , temperature of measuring system will change . through analysis and comparison graphs of temperature , we can see that they differ from each other with the variation of coal ingredient and there is a flexion in it 通过分析和比较恒温式氧弹仪测定煤炭发热量过程中量热系统温度变化的曲线，发现量热系统的温升曲线普遍存在着一个拐点，这个拐点可以作为煤在过氧条件下着火燃烧方式的判据。
In this paper , through the overall stability analysis , the flexion eigenvalue , the nonlinear overall stability factor of the perfect structure and the nonlinear overall stability factor considering the initial imperfection of the different cable form projects and the relevant single - layer spherical latticed shell were compared ; the effect of different cable form projects to the structural overall stability was obtained 本文对选定的三个布索方案进行了整体稳定分析,比较了各方案的屈曲特征值、完善结构的非线性整体稳定系数和考虑初始缺陷的非线性整体稳定系数,并和相应单层球面网壳做了对比,得到了布索圈数对结构整体稳定性能的影响。
To investigate the the body shape strength and kinematics that effects sprint expert performance 17 healthy male sprinters were measured using songxiam9000 high speed vidicon in the field ; body shape of sprint athlete were tested by steel rule ; meanwhile shoulder were tested at 60 , 240and360 deg / sec velocities ; lower limb were tested at 60 , 240 deg / sec velocitues using biodex - ii tesing and rehabilitation system in the laboratory this research provide theoretical basement to scientifically make reasonable exercise prescription and perfect sprint theory the result show that ( 1 ) the results of correlation indicate that 100m performance related to the shoulder fast flexion torque and hip flexion / extension torque ^ ankle fast dorsiflexion torque ; ( 2 ) the upper arm relaxing enclose and lower limbs length effect 100m performance ; ( 3 ) the biggest shoulder extension joint , swing rage of shoulder and the biggest elbow joint extension effect 100m performance 受试者为17名男子一、二级短跑运动员。使用松下m9000高速摄像机对100米跑动过程中的运动员进行录像，同时测试短跑运动员100米成绩，利用爱捷录像分析系统获取运动学参数；用人体测量尺测试短跑运动员的肢体围度；同时采用biodex -型等动测力及康复统，测试运动员上肢肩关节及下肢髋、膝、踝3个关节的等速屈伸肌力。在角速度60 s (慢速) 、 240 s (中速)和360 s (快速)下测试肩关节等动向心收缩肌力；在角速度60 s9慢速)和240 s (快速)及120 s下测试下肢3关节等速向心及离心肌收缩肌力。
This flexion of graph can be defined as criterion of coal ignition character under excessive oxygen supply . based on viewpoints of coal ignition , we put forward assumption aiming at ignition character of coal with excessive oxygen . in this thesis , with comparison of average temperature increase among eleven kinds of coal , the following are obtained : homogeneous ignition happens when coal has higher volatile matter and there is a approximative direct - ratio relationship between temperature hoist before flexion and content of volatile matter ; on the other side , heterogeneous ignition occurs for the coal with lower volatile matter content because of collective influence of volatile matter and fixed carbon combustion , and one - to - one relationship between temperature increase before flexion and content of volatile matter does not exit 以煤着火性质研究的观点为基础，对煤在过氧条件下的着火性质提出假设，通过11种标准煤样在过氧条件下燃烧实验，对比了拐点前后平均温升与煤样成分的关系，证实了挥发分含量较高的煤在过氧条件下发生均相着火燃烧，拐点前后量热系统的温升分别与挥发分和固定炭的含量成近似正比的关系；而挥发分含量较低的煤在过氧条件下发生非均相着火燃烧，拐点之前量热系统的温升由于受到挥发分和固定炭同时燃烧的影响，因而不存在温升与挥发分含量之间单一的对应关系。
A case study is presented for the reachable workspace of the human finger ( flexion / extension planar motion ) , based on the research on the anthropometric data of human finger kinematic parameters and the joint motion range limits , and then 3 - d modeling of fingers reachable workspace using a recursive swept boundary method is constructed 通过测量活体手指的长度及活动度，研究了人体手指几何和运动参数的分布，并用曲面包络的方法求出手指可达工作空间的三维模型。
