支架

It comprises an in-put shaft hinged to its yoke through one axis, and an out-put shaft also hinged to its yoke through another axis, and these two yokes (13) were combined together by only one axis position, perpendicular to that two yoke axes like a cross, so that this combined axis will bend just like the angle bisector of that two shafts to maintain its constant velocity by a few methods, firstly, by using a section of gear teeth mesh at both ends of the shafts' teeth were so polished so that it can turn longitudinally as usual gear, and also sideways, to provide a larger solid angle of turning from ordinary 45 degrees into 60 or even more.

它包括输入轴，其通过一根轴铰链连接于叉形支架，和输出轴，其通过另一根轴也铰链连接于其叉形支架。并且这两个叉形支架(13)只需用一根相对垂直铰链轴相连而组合在一起，使得这种组合的轴总能形成这两个轴的角平分线，以通过少数几种方法保持其恒速，首先，通过用啮合在轴的两端的一段齿轮齿抛光为以能够像普通齿轮一样纵向转动，并且还能够侧向转动，以提供较大的转向立体角，从通常的45度变成60度或更大。

Aim:To study the relationship between restenosis and the changes of nitric oxide and noradrenaline before and after the coronary artery stent implantation. Methods: The serum levels of NO and NA before and after the CASI in 21 patients with unstable angina were measured.

目的：观察不稳定型心绞痛患者经皮冠状动脉腔内支架植入术支架植入前后血浆中一氧化氮和去甲肾上腺素浓度的变化，探讨其在经皮冠状动脉腔内支架植入术术后再狭窄发生中的作用。

Kinematics from the speakers, it is stable, which is the optimal shield in the box-stent and the stent Crib 1:00, Leung also cover is closed goaf, so as to prevent the rock into the broken roof support Face.

从运动学讲，它是稳定的，这是掩护式支架最优于框式支架和垛式支架的一点，掩护梁也完全封闭了采空区，从而能够防止破碎顶板岩石掉入支撑工作面。

Kinematics fromthe speakers, it is stable, which is the optimal shield in thebox-stent and the stent Crib 1:00, Leung also cover is closed goaf,so as to prevent the rock into the broken roof support Face.

从运动学讲，它是稳定的，这是掩护式支架最优于框式支架和垛式支架的一点，掩护梁也完全封闭了采空区，从而能够防止破碎顶板岩石掉入支撑工作面。

Methods A total of 62 unstable angina pectoris patients were divided into Cypher^TM group or Bxsonic group.

方法选择62例冠心病不稳定性心绞痛患者，30例置入Cypher^TM支架（Cypher^TM支架组），32例置入Bxsonic支架。

Squeezing and preparing a plate underframe and a upper holdfast with support legs respectively, pre-sintering and final finishing the underframe and upper holdfast respectively, then welding the underframe and the upper holdfast of upper holdfast into one unit, finally heat treating the welded one unit product under the temperature of 150-650DEG C.

分别挤压制成一个平板形底架和一个带有支撑腿的上支架，将底架和上支架分别预烧结、精整，然后，再将底架和上支架的支撑腿烧结焊成一体，最后在150～650℃的温度下将焊接为一体的产品进行热处理。

The paper introduces a mining method of hydraulic powered shield supports on single leg sustain in deeply inclined coal seams with the indication of the support structure,support move locus,roadway layout and mining technology,and the developing direction of this method in future.

介绍一种在大倾角煤层中开采的采煤方法———单腿支撑式柔性掩护支架采煤法，并从支架的结构、支架运行轨迹、巷道布置以及回采工艺等诸方面进行了阐述，提出了该采煤法今后发展的方

After stent was implanted, icteric index and itch of skin were relieved quickly in 148 patients with malignant biliary obstruction, infection of biliary tract were controlled in 23 patients with bile duct stone, and 4 patients with bile leakage were cured.

严格掌握支架置放指征，合理选择支架型号和所需引流的胆管分支，规范操作流程是保证支架成功置放和有效引流的关键。

BACKGROUND: The biliary stents commonly used in clinic are made of plastics and metal, both of which have some irresolvable defects.

背景：临床上使用的胆道塑料支架和金属支架存在胆泥形成、支架嵌入胆道壁等难以克服的缺陷。

On the basis of the data base of powered support, this paper presents a useful kinematic analystical method of powered support's lemniscate linkages with one-dimension optimum method (the 0.618method), and a related compu -ter programme is worked out.

本文在液压支架主要结构尺寸数据库的基础上，研究了以支架任意工作高度H为自变量，以一维优化法(Q.618法)为依据的液压支架四连杆机构运动学分析的实用方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。