后循环的

Taking normal circulation of heating furnace walking beam for example, the structure and operating principle of three main current change valves are raised with the emphasis on the pressure oil change under each action.

以加热炉步进梁正循环为例，阐述了三个主要电液换向阀的结构及动作原理；并详细分析其每一动作中控制油路压力油的变化情况；说明了将控制油路由"外控"改为"内控"后系统仍然能正常工

The optimum HCI/ferrous chloride molar ratio was 1/3.3 when ironic chloride was generated by using hydrogen peroxide. The generated ironic chloride oxidized acetoin in good yield and could be recycled for many times.

用双氧水再生氯化铁时，加入浓盐酸最佳用量与氯化亚铁的摩尔比为1：3.3，再生后的氯化铁氧化效果良好，可多次循环使用。

The measure of Cyclic Voltammetry illustrated that the signal optimization subsequence is Nd ＞Sm ＞La＞Ce＞TiO2, which basically follows the subsequence of oxidizability.

电化学循环伏安测试表明：掺杂后光催化信号优化顺序为Nd ＞Sm ＞La＞Ce＞TiO2，该规律基本遵循掺杂元素的氧化性由强到弱的顺序。

Perivenous application of fibrin glue has beneficial effects on lessening early injury of vein grafts.

生物蛋白胶外支架能给兔移植静脉提供足够的外周支持，明显缓解移植静脉植入动脉循环后的早期损伤。

We also observed the fs grafts were associated with a profound network of matured microvessels, but in ns grafts they were far less numerous. conclusion perivenous application of fibrin glue has beneficial effects on lessening early injury of vein grafts.

生物蛋白胶外支架能给兔移植静脉提供足够的外周支持，明显缓解移植静脉植入动脉循环后的早期损伤。

Results The bletilla colloid was a homogenous viscous colloid whose relative viscosity was 2324.6 mm2/s. It was easily injected through 4-F catheter and hyperattenuating under fluoroscopy, meanwhile, with good histocompatibility and hemo-compatibility, without pyrogenetic response and toxicity. In vitro, the mixture of bletilla colloid and MMC did not produce separation and suspention phenomena but released 50%of MMC at 1.8h and 100%at 3.4h. The bletilla colloid mainly embolized peripheral arteries, maintaining occlusion for 5 weeks and without formation of collateral circulation. The injuries of normal hepatic tissues were slight, without hepatic cytonecrosis.

结果 (1)白芨胶为一种均质的胶状物，有一定粘滞性，相对粘度2 324.6 mm2/s，不透X线，易经4F导管注射；(2)白芨胶具有良好的血液相容性和组织相容性，无致热原性及毒性作用；(3)白芨胶-丝裂霉素C体外混合后，无分层及悬浮现象，释放MMC 50%约需1.8小时，100%需3.4小时；(4)白芨胶主要栓塞末梢小动脉，栓塞牢靠，维持时间可达5周，不易形成侧支循环；(5)白芨胶栓塞对正常肝组织损伤轻微，未出现肝细胞坏死。

It is characterized by a connection between the aorta and the pulmonary artery which allows oxygen-rich blood that should go to the body to recirculate through the lungs.

在主动脉和肺动脉之间（存在出生后本来应该关闭）的连接通道是其特点，政造成富含氧的鲜红色血液未能进入全身循环，而是经过此通道再次回流到肺部，。

It is characterized by a connection between the aorta and the pulmonary artery which allows oxygen-rich blood that should go to the body to recirculate through the lungs.

在主动脉和肺动脉之间（存在出世后本来应该关闭）的连接通道是其特点，政造成富含氧的鲜红色血液未能进入全身循环，而是经过此通道再次回流到肺部，。

When theresin concentration exceed 10%,three types of recovery swelling experiment indicate that thetransverse compressive deformation was almost 100% fixed.The X-ray and FTIR spectra ofcompressive wood treated by PF show that the width of crystalline region and crystallinitywas hardly changed comparing with untreated wood;Esterified carbonyl degree at 1736cm-1and the end carbon degree of semicellulose at 897cm-1 increased.

当树脂浓度超过10％时，三种循环膨胀实验证明，木材横纹压缩变形几乎100％被固定。X-射线衍射谱图和FTIR光谱表明，PF预聚物处理后的压密材同素材相比，结晶区的宽度和结晶度几乎没发生改变；1736cm-1处酯化羰基峰强度增加，897cm-1处半纤维素异头碳(C1)峰强度增加。

This paper introduces the design of cooling water cycle with the early and cold water from original coal gas , impurity benzene and vaporing ammonia in Guangzhou steel Company It uses wastewater by treatment as adding water .

本文介绍广钢焦化厂原煤气初冷水，粗苯和蒸氨系统的冷却水循环系统的设计，将焦化废水净化处理后作为补充水，旁滤系统保证了循环水质能达到工艺要求。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。