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  四气门
     , Ltd based on worldwidelyadvanced technology. The rated power of X6170Z diesel engine with 4-valve,in-line, four-stroke, turbocharged and inter-cooled, “ω” combustion chamber,double-cycle water cooling and pressure lubrication is 330kW, the rated speedis 1000r/min, and the brake specific fuel consumption is 204g/kW.
     X6170Z型柴油机充分吸收了国内外柴油机的先进技术,主要结构特点为:采用了四气门、直列、四冲程、增压中冷、ω型直喷式燃烧室、双循环水冷、压力润滑等,其功率为330kW,转速1000r/min,燃油消耗率204g/kW.
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     A Brief Introduction of 150 Series Water-cooled 4-valve Engine
     150系列水冷四气门发动机简介
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     Development and Study of 4-Cylinder 4-Valve Diesel Engine Reached Euro Ⅱ Emission Standard
     四缸四气门排放达欧Ⅱ柴油机的开发研究
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     Directly coupled fluid-heat simulation is employed in this paper to investigate the temperature field of cylinder head in a 4-valve gasoline engine by using of CFD software. Computational model includes cylinder head,cylinder block and water jacket.
     使用CFD软件通过建立的气缸盖、机体和冷却水套组成的耦合模型,采用直接流热耦合方法计算了某四气门汽油机气缸盖温度场。
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     Inclined-Axis Swirl of 4-Valve Spark Ignited Engine with Variable Intake Device
     四气门发动机可变进气结构的斜轴涡流特性
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  4气门
     Structure Design of 4-Valve Vehicle Diesel Engine
     车用柴油机4气门结构设计研究
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     Experimental Study on the Matching of Inlet System in 4-Valve Diesel Engine
     4气门柴油机进气系统匹配的试验研究
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     The Calculation of In-Cylinder Air Motion for 4-Valve DI Engine
     4气门柴油机缸内气流运动的模拟计算
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     Effect of DOHC 4-Valve Mechanism on Engine Power
     DOHC,4气门配气机构对发动机性能的影响
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     The combustion process in the 4-valve DI diesel engine with secondary injection by combustion chamber wall was simulated based on KIVA3. Analyzes the flow characteristics in compression and expansion strokes.
     以 KIVA3为计算平台 ,对 4气门直喷式非增压柴油机在油注喷向燃烧室侧壁后飞溅形成二次喷射燃烧的整个工作过程进行了模拟计算 ,着重分析了压缩和膨胀做功冲程缸内流场。
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  “4-valve”译为未确定词的双语例句
     A Discussion of the Possibility of Changing 156FM 2-Valve Gasoline Engine into a 4-Valve one
     156FM汽油机二气门改四气门的可行性探讨
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     A Study on the Effect of Variable Tumble and Twice Electronic Fuel Injection on the Performance of a 4-Valve Lean Burn SI Engine
     二次喷油对点燃式可变滚流进气发动机稀燃影响的研究Stu
短句来源
     A Study on the Effect of Variable Tumble and Twice Electronic Fuel Injection on the Performance of a 4-valve Lean Burn SI Engine
     可变滚流与二次喷油对火花点燃式发动机稀燃特性影响的研究
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     The key technologies to lower the exhaust emission,included the in-cylinder control,exhaust gas recirculation,variable geometry turbo,4-valve,common rail and after-treatment are presented.
     阐述了降低排放的关键技术,包括缸内控制、废气再循环、可变涡轮增压、4气阀、共轨和排气后处理技术。
短句来源
     Directly coupled simulation is employed in this paper to investigate the temperature field of cylinder block in a 4-valve gasoline engine by using of CFD software. Computational model includes cylinder head,cylinder block and water jacket.
     通过建立的气缸盖、机体和冷却水耦合计算模型,使用直接耦合法,利用CFD软件计算了机体温度场。
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  -valve
This field was visualised in an optical single-cylinder 4-valve pentroof-type spark-ignition engine by means of laser-sheet illumination in planes parallel to the cylinder head gasket 6 and 10?mm below the spark plug.
      
The study was carried out for a 4-valve engine head with shrouded intake valves in a special single cylinder transient water analog.
      


The anatomical and histological studies of the alimentary canal of Erthesina fullo Thunberg was studied in detail. The alimentary canal consists of three parts:the stomodaeum(pharynx and oesophagus),the mesenteren and the proctodaeum(rectum).The mesenteron in its turn differentiates morphologically into four parts,while the fourth part bears four reddish mycentoms——modified epithelial cells containing symbiotic bacteria. The paired salivary glands consists each of the main gland,the reservior, the tubular accessory...

The anatomical and histological studies of the alimentary canal of Erthesina fullo Thunberg was studied in detail. The alimentary canal consists of three parts:the stomodaeum(pharynx and oesophagus),the mesenteren and the proctodaeum(rectum).The mesenteron in its turn differentiates morphologically into four parts,while the fourth part bears four reddish mycentoms——modified epithelial cells containing symbiotic bacteria. The paired salivary glands consists each of the main gland,the reservior, the tubular accessory gland and the salivary duct. The four malpighian tubules of this insect open into the pylorus,just above the pyloric valve.The epithelium of the malpighian tubule is continuous with that of the mesenteron,and not with the proctodaeum.This confirms the obser- vations of other authors in Orthoptera and Dermaptera.

1.本文记载了黄斑椿象(Erthesina fullo Thunberg)消化系统及马氏管的解剖与组织构造。2.黄斑椿象的消化管分为前肠(咽、食道)、中肠及后肠(直肠)三部,其中中肠又分化为形态不同的四部份,第四部份上着生有四条贮菌器,系由中肠上皮细胞增殖交形而成。3.黄斑椿象的唾腺分为主腺、副腺、贮囊及唾管四部。4.黄斑椿象的马氏管开口于中肠末端的幽门部,幽门瓣的前方,幽门部及马氏管凸的上皮,其形状与中肠相同,而与后肠不同。

On the basis of experimental results, the following three methods are suggested to prevent the settling of larvae and the killing or removing of adults of fouling mussels in pipelines:1.Sand filtration. Before water is pumped into the pipelines, it is made to pass through sand layer 3 cm. or more in thickness and consisting of grains between No. 40 and No. 60 standard sieve in size. It has been proved, that with such thickness and grain size, the sand layer is effective in preventing the entrance of eggs or...

On the basis of experimental results, the following three methods are suggested to prevent the settling of larvae and the killing or removing of adults of fouling mussels in pipelines:1.Sand filtration. Before water is pumped into the pipelines, it is made to pass through sand layer 3 cm. or more in thickness and consisting of grains between No. 40 and No. 60 standard sieve in size. It has been proved, that with such thickness and grain size, the sand layer is effective in preventing the entrance of eggs or larvae of mussels and other fouling organisms 65u or more in size.2.Poisoning with arsenic trioxide. One of the great difficulties of exterminating mussels is that they are able to protect themselves by closing their valves in the presence of poisonous substances, hence greatly prolonging the time needed for chemical treatment. If chemicals can be found which are poisonous to the mussels but to the presence of which they are not very sensitive then the duration of chemical treatment will be greatly shortened. Experiments prove that arsenic trioxide is the desired chemical, concentration of 100-400 p. p. m. being sufficient to kill the mussels in 20 minutes to 2 hours.3.Chlorinated lime treatment. One percent chlorinated lime, containing 38.6% available chlorine, in sea water is found to be able to dissolve the attached byssus threads of the mussels in 10 minutes. By such a treatment, the mussels will be detached from the pipelines and may be easily washed off with water flow.It is suggested that the second and third treatment may be periodically used before the mussels grow to a size that will be detrimental to the plant equipmants.

本文从三方面提供可能应用于解决管道中贻贝堵塞问题的办法: (1)砂滤法:在海水进入水管前用砂将贻贝幼虫滤去,凡颗粒小于40号筛的砂,厚度在3厘米以上,65微米的贻贝卵或幼虫即不能滤过。 (2)用三氧化二砷杀死巳附着的贻贝成体,优点是贻贝不能发觉,施毒时间短而毒效大,用浓度400—100p.p.m.时20分钟至2小时即可杀死。 (3)用漂白粉使贻贝的附着足丝溶解而将其从水管中冲出的办法,含有效氯为38.6%的漂白粉1%溶液在10分钟内即可使足丝溶解,贻贝脱落。

Right heart catheterization was performed 120 times in 112 cardiac cases admitted into Chung-Shan Hospital of Shanghai First Medical College in a period of 13 months from September 1957 to September 1958. Catheterization was done in this series of cases chiefly for the purpose of studying the hemodynamic changes in the lesser circulation and as an aid to diagnosis in congenital heart diseases and rheumatic mitral valvular disease, when cardiac surgery was considered for treatment. In 8 of them catheterization...

Right heart catheterization was performed 120 times in 112 cardiac cases admitted into Chung-Shan Hospital of Shanghai First Medical College in a period of 13 months from September 1957 to September 1958. Catheterization was done in this series of cases chiefly for the purpose of studying the hemodynamic changes in the lesser circulation and as an aid to diagnosis in congenital heart diseases and rheumatic mitral valvular disease, when cardiac surgery was considered for treatment. In 8 of them catheterization was repeated 6 weeks after surgical repair of an interauricular septal defect or valvotomy of a stenotic pulmonic valve. In this paper the entire procedure of catheterization has been described in detail, particuhrly with regard to some technics of manipulation of the catheter in order to let it get through the tricuspid and pulmonic orifice, and to wedge it into the "pulmonary capillary". Indications, contraindications, complications and results of catheterization in our cases have been dicussed. Among the complications, cardiac arrhythmia was the most common but it was seldom serious. Electrocardiographic observation during the procedure showed that premature beats especially of ventricular origin occured nearly in every case. Two patients developed pulmonary edema shortly after catheterization. One of them survived, while the other unfortunately died in spite of energetic treatment. Both were cases of mitral stenosis with marked pulmonary hypertension. In the entire series of 112 cases, catheterization helped us to establish the diagnosis in 107 of them, among which 68 patients were operated upon after catheterization, and in 66 of them the preoperative diagnoses proved to be correct. According to the material presented, right heart catheterization appears to be a comparatively safe and useful procedure in the diagnosis of cardiac diseases.

一、本文分析报告112例住院心脏病病人,120次右心导管檢查的結果。二、本组病例檢查的指征主要是对先天性心脏病及二尖瓣病的診断和外科治疗的选擇。三、对檢查方法加以描述,对影响檢查成敗的因素加以討論。四、分析檢查的結果,认为右心导管檢查对上述心脏病的診断有重大的价值,而危險性不大,但檢查时仍应提高警惕,掌握禁忌証并注意安全防止严重并发症的发生。

 
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