减压

This paper introduced a cartridge pressure reduction valve with large capacity and low control pressure and good stability which is used in a warship s lubrication system.

介绍了一种新型的控制压力低、流通能力大和稳定性好的插装式减压阀，并运用非线性分析方法建立了插装式减压阀的数学模型和MATLAB仿真系统，分析了插装式减压阀的稳态特性和动态特性的影响因素。

The pressure reduction principles with expander and with throttle regulator are respectively discussed, and their exergy depreciatory equations that can be use to calculate the power in pressure reducing processes are respectively deduced.

第二章对高压气动容积减压的新概念进行了定义；利用热力学的能分析法和火用分析法，推导出了对应节流减压和容积减压的能量特性方程和火用损失表达式，为减压过程中能量计算提供了有效工具；计算表明高压气动采用容积减压方式比节流减压方式有明显的节能效果。

Third, the main purpose and submersible pump application Including the construction of the construction platoon, agriculture and irrigation and drainage water, industrial water cycle, urban and rural drinking water supply, and even disaster relief and so on.

"Submersible pump works "是由中国减压阀网提供的国际阀门新闻，译文仅供参考。另外，中国减压阀网还提供相关产品搜索：减压阀型号、减压阀价格、减压阀技术、减压阀新闻、减压阀生产商等。

Fifteen patients underwent operation, including gastrostomy (6 cases), gastrotomy (4 cases), partial gastric fundus resection (2 cases), others operations (2 case), and laparotomy exploration (1 case); among them four patient died.

手术治疗15例，包括胃切开减压、胃造口术（6例），胃切开减压后再缝合创口（3例），胃切开减压、胃造口、空肠造口术（1例），胃底部分切除术（2例），十二指肠空肠吻合术（1例），空肠造口术（1例），开腹探查术未切开胃壁（1例），死亡4例(26.7%)。

Specializes in import of equipment overhaul valve repair; at gas import relief valve repair, valve repair imported steam, nitrogen import relief valve repair, valve repair water imports, import pneumatic valve repair, import and other import-controlled solenoid valve valve repair for more than 30 years technical experience, the quality of imported valve repair with the new imports of the same valve you never authorized.

江阴市欧雷斯阀门设备检修有限公司专业进口减压阀维修；在煤气进口减压阀维修、蒸汽进口减压阀维修、氮气进口减压阀维修、水上进口减压阀维修、进口气动阀维修、进口电磁阀等进口自控阀门维修已有30多年技术经验，进口阀门维修质量与新进口阀门同等您绝对认可。

Methods Three hundred cm-long ileus tube was installed into jejunum by nasal cavity under radiophotography observation in 25 cases with recurrent postoperative adhesive ileus,ileus tube was impulsed by enterokinesia to ileum end to relieve adhesive ileus and conduct internal intestinal arrangement.

25例术后反复黏连性小肠梗阻患者，X线监视下经内置金属导丝的引导作用将300 cm长的肠梗阻导管经鼻置入空肠屈氏韧带20 cm以远，即刻小肠内抽吸减压，导管前气囊充水形成水囊，模拟食团在肠蠕动的推动下在小肠内移行，带动导管边吸引减压边向小肠远端前行，到达梗阻的直接上部抽吸减压或通过黏连部至回肠末端全小肠减压，解除肠梗阻。

The comparison of results from mathematical model and physical model in vacuum tank for simulation of transient in air cushion surge chamber shows that the similarity laws of various quantities in model test may have influences on the dissimilarity of test results.

本文对比了含气垫式调压室的引水系统，数学模型计算和减压模型试验结果，分析了各种减压模型相似因素对试验结果的影响，认为引水系统管道内含气量、模型的缩尺效应、气室内空气的状态变化以及减压试验条件等的相似性都会造成物理模型试验结果的误差。

Cardiotomy suction relief valve was applied in decompression group and not in control group during ECC.

60例室间隔缺损患儿随机分为减压组和对照组，每组30例，减压组体外循环中心内吸引应用减压阀，对照组体外循环中心内吸引不用减压阀。

［Objective］ To analyze the outcome of internal fixation for occipitalization with atlantoaxial joint dislocation by posterior decompression and occipitocervical fusion ［Method］ From December 2005 to June 2007,8 patients with occipitalization and atlantoaxial joint dislocation received removal of the posterior arcus of atlas and the enlargement of the posterior edge of the foramen magnum after skull traction performing for an average of 135 daysAll patients were operated on by posterior craniocervical fusion using cervifix internal fixation system and autologous ilium graftsThe clinical efficacy after operation was analyzed by Japanese Orthopaedic Associationneural function score ［Result］ All the patients were followed up from 6 months to 2 years, average of 15 monthsNo complication was foundAtlantodental interval was 5~9 mm before and 4~6 mm after skull tractionAtlantoaxial joint dislocation didn't completely reducedThe neurological defects were improved to some extents according to the JOA scoreImageology showed all patients had full decompression and bony fusionThe loosening or broken internal fixation was not found ［Conclusion］ Posterior decompression and fusion is a feasible method for the treatment of occipitalization with atlantoaxial joint dislocation,and the clinical effect is satisfactory

分析后路减压枕颈融合内固定术治疗合并寰枢关节脱位的寰椎枕骨化临床疗效。［方法］2005年12月至2007年6月间，对8例合并寰枢关节脱位的寰椎枕骨化患者在行颅骨牵引治疗一段时间（12~16 d，平均135 d）后采用枕骨大孔后缘扩大，寰椎后弓切除减压取自体髂骨枕颈融合Cervifix系统内固定术，手术后采用日本骨科学会神经功能评分分析临床疗效。［结果］8例患者随访6个月~2年，平均为15个月。8例患者无一例出现术后并发症，术前寰齿前间隙为5~9 mm，经颅骨牵引后为5~7 mm，寰枢关节脱位未能完全复位。手术前后JOA评分示神经症状均有不同程度恢复，影像学检查示枕颈区减压充分植骨区获得骨性融合，无一例出现内固定松动或断裂。［结论］合并寰枢关节脱位的寰椎枕骨化患者术前仔细评估影像学改变，采用颅骨牵引一段时间后行后路减压枕颈融合内固定术的治疗方案是合理可行的，且临床效果满意。

If by means of a prereduction MRI or after neurologic deterioration during closed reduction, the surgeon becomes aware of a fragment of disc material displaced into the spinal canal, then an anterior discectomy, open reduction, fusion, and plating becomes necessary.2,7,9 In approximately half of the cases, a closed reduction will be successful in reducing the dislocation before surgery.50 In the majority of the others, an intraoperative reduction performed after the discectomy and decompression will achieve anatomic reduction.9,51 For those patients in whom an anterior discectomy and decompression have not been successful in reducing the dislocation, then a supplemental posterior open reduction should be performed.52

假如借助MRI检查，或在闭合复位过程中神经症状进一步加重，外科医生意识到有椎间盘碎片突入了椎管，此时就需要前路椎间盘切除减压、开放复位和固定融合。大约有一半的病例手术以前能够通过闭合复位来成功的将脱位复原，剩下的病例则需要在术中将椎间盘切除减压来达到解剖复位。假如有病人经过前方的椎间盘切除和减压后仍然不能成功的还原脱位，则需要再行后方的开放复位术。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。