正位

The truck cast steel three big piece type bogie is easy to maintain. But since the grate weight under spring and the large operation strength during running, it is difficult for the bogie to keep the positive position. The critical speed of the snaking motion is low, which is inapplicable for high speed running. The other type of truck bogie is H type integrative truss. Its structure is complicate relatively, which is not easy to manufacture and maintain. But it can keep the positive position of the bogie preferably. And because it is adopted the structure of axle box one series elastic suspend, the weight under spring reduces. Which achieve the effective control to wheel sets and improve the running quality of the bogie distinctly.

货车铸钢三大件式转向架便于制造维修，但因其簧下质量大，在运行中轮轨作用力大，转向架难以保持正位，蛇行运动临界速度低，不适用于高速运行；货车转向架的另一种形式是"H"型构架一体式，结构较为复杂，不便于制造和检修，但它能够较好地保持转向架的正位，而且由于采用了轴箱一系弹性悬挂结构，降低了簧下质量，实现了对轮对的有效控制，明显地改善了转向架的运行品质。

In the antero-posterior X- ray film ,the position of the lag screw should be parallel to the long axis of the neck of femur, slightly above the level of the femoral calcar.

认为加压螺钉的位置应是在正位平行于股骨颈的长轴，位于股骨距稍上的水平，侧位位于股骨颈的中轴线上。

Sleep is restless and spiritual dispirited in 2 cases (3.6%), the chest X-ray normal position piece examination lungs tuberculosis pathological change in 52 cases (92.9%), the normal position piece examination does not have the obvious tuberculosis pathological change, but to lean the posit

睡眠不安、精神不振2例（占3.6%）胸部X线正位片检查肺部结核病变52例（占92.9%），正位片检查无明显结核病变而侧位片及胸部CT显示肺内及肺门淋巴结结核病变4例（占7.1%），结核菌素试验强阳性27例（占48.2%），痰查结核菌阳性3例（占5.4%），淋巴结活检 5例（占8.9%）。26例治疗9个月后病变完全吸收，29例6个月后病变完全吸收， 1例因药物肝炎不能顺利完成治疗。

Sleep is restless and spiritual dispirited in 2 cases (3.6%), the chest X-ray normal position piece examination lungs tuberculosis pathological change in 52 cases (92.9%), the normal position piece examination does not have the obvious tuberculosis pathological change, but to lean the position piece and in the chest CT demonstration lung and the lung hilus lymph node tuberculosis pathological change 4 cases (7.1%), the PPD test was strong masculine 27 cases (48.2%), the phlegm looks for the tuberculosis bacterium masculine gender 3cases (5.4%), the lymph node biopsy 5 cases (8.9%). 26 cases treated for 9 months the pathological change to absorb completely, 29 cases 6 months the pathological change absorbs completely. Because the medicine liver is poisoned 1 cases cannot smoothly complete the treatment.

睡眠不安、精神不振2例（占3.6%）胸部X线正位片检查肺部结核病变52例（占92.9%），正位片检查无明显结核病变而侧位片及胸部CT显示肺内及肺门淋巴结结核病变4例（占7.1%），结核菌素试验强阳性27例（占48.2%），痰查结核菌阳性3例（占5.4%），淋巴结活检 5例（占8.9%）。26例治疗9个月后病变完全吸收，29例6个月后病变完全吸收， 1例因药物肝炎不能顺利完成治疗。

Each blood vessel DSA in correctitude,side place and circumrotate.

每根行正位、侧位，再加旋转DSA造影。

With normal vision were studied. The result showed: 504 eyes (77. 54%) suffered from hyperopia, 66 (10.15%) from myopia, 2(0.31%)from astigmatism and 78(12. 00%) were emmetropia. Among 325 youths, 172 (52.92%) had esophoria (including esophoria-hy- perphoria), 126 (38.7%)exophoria (including exophoria-hyperphoria), 13(4.00%) hyperphoria and 14(4.31%)had orthophoria. No significant...

结果显示，远视者为504眼(77.54％)，近视者66眼(10.15％)，混合散光者2眼(0.31％)，正视者78眼(12.00％)，325人中，内隐斜者为126人(38.77％)，上隐斜者13人(4.00％)，正位者14名人(4.31％)；经用行x列表的x~2检验法分析，屈光不正的类型与斜视的种类之间没有显著联系。

It is different from the Hoskins potential vorticity theory to explain the positive potential vorticity abnormal in upper level and the positive feedback of cyclone in lower layer which the plateau is a strong warm source that the heating effect is stronger than the warm air advection. The superadiabatic state is frequently appears over the plateau, it would be favorable to the development of the cyclonic circulation.

与Hoskins用位涡思想来阐述高层正位涡异常与低层气旋的正反馈作用不同的是，夏季高原本身是巨大的热源，这种加热甚至比暖平流加热还强；高原上经常出现"超干绝热"现象，这将使得高原上的气旋性环流加强幅度比其他情况下更大；由于高原地形的抬高使得从高原到上层扰动的气层厚度小于Rossby穿透高度HR=fL/。。。

Through analysis of potential vorticity in isobaric surface field, in high-troposphere a positive potential vorticity disturbance before rainstorm generation;positive potential vorticity disturbance in high-troposphere downward, form one vertical disturbance column, now corresponding precipitation develop stage;When near ground arises negative potential vorticity disturbance, precipitation also weaken.

通过对等压面的位涡分析，发现在暴雨发生发展时，在对流层高层有正位涡向下扰动，在暴雨的发展鼎盛阶段，从对流层中高层到地面形成一个垂直扰动柱；位涡柱对地面气旋的发展有较好的指示性，位涡柱形成时刻前后降水达到最强；当近地面出现负的位涡扰动时，降水随之减弱。

Methods: Injured patients of cervical spine was cayyied on X-ray inspection.,then according to the result of ADI and LADS ,next to CT or MRI inspection ,and that was to guide clinical diagonosis and treatment.To observe atlanto-dental interval (anterior arch of atlas posterior border to odontoid process anterior border) and odontoid process caster(included angle between axis of ordinate of odontoid process and axis of ordinate of odontoid vertebra) on the X-ray lateral projection.

对有颈部外伤史的病人常规行X线检查，然后根据寰齿间距和齿突侧块间隙的结果，行下一步CT检查或者MRI检查，指导临床治疗方法的选择。X线侧位片观察寰齿前间隙(为寰椎前弓后缘与齿突前缘距离)，齿状突后倾角(齿突纵轴与枢椎体纵轴的夹角)；开口正位片上测定齿突侧块间隙。

The epicondylar breadth and the breadth of medial and lateral condyles were measured on the anteroposterior X-ray films, the length and height of medial and lateral condyles on the lateral films were also measured.

修勤目的：为积累资料和探讨国人股骨髁的性别差异，方法：随机对 33～76 岁 194 例健康人(男 138，女 56)拍摄膝部正侧位 X 线片；在正位片上测量了上髁宽和内、外侧髁宽，在侧位片上测量了内、外侧髁长和高。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。