1) Precision coupling
精密偶件
1.
Analysis of inspection means for three big precision coupling of fuel supply system in diesel engine;
柴油机燃油供给系统三大精密偶件的检测方法分析
2.
This paper expounds mainly wear features of several key precision coupling of fuel supply system in automobile diesel engine during repairment of automobile.
主要论述在汽车修理中，汽车柴油机燃油供给系中几个最关键的精密偶件的磨损特征，磨损后影响及检验方法，以确保修理质量。
3.
By SEM,micro analysis,tolerance dimension and surface roughness measuring of precision coupling,and atomization performance test of injection nozzle,the failure cause of the precision coupling of a diesel engine,the plunger matching parts,delivery valve and injection nozzle matching parts was investigated.
针对某柴油发电机故障中非正常失效的柱塞偶件、出油阀偶件和喷油嘴偶件三精密偶件,采用扫描电镜、微区成分分析等方法,结合精密偶件配合尺寸、表面粗糙度测量和喷油嘴雾化性能对比试验,分析了三精密偶件失效的原因和失效机制,并提出改进措施。
2) diesel precise paired parts
柴油机精密偶件
3) precise plastic part
精密塑件
1.
The steps how to set up complete and resonable multi-stage injection molding process data for precise plastic parts' manufacture have been introduced.
介绍了在精密塑件成型中制定完整合理的多级注塑工艺参数的步骤 ,并结合实例探讨了注塑工艺的各要素对产品外观质量、内应力、尺寸等的影响。
4) Precision components
精密零件
1.
Micro abrasive jet machining for precision components finishing;
精密零件的微磨料气射流光整加工
5) investment casting
精密铸件
1.
Based on solidification and shrinkage theory of molten metal and fluid How theory through porous media, a mathematical model of predicting microporosities in Ti-Al alloy investment castings has been established under the condition of centrifugal pressure;.
根据金属液凝固收缩理论和多孔介质中流体流动原理,建立了离心压力下Ti-A1台金精密铸件中微观缩松缺陷预测的数学模型,采用该模型对Ti-Al增压涡轮铸件进行模拟计算,并进行了实验验证,结果表明,数学模型能够合理反映离心转速,离心半径、温度梯度和冷却速度等重要因素对微观缩松的影响规律,数值模拟结果与实验结果相吻合。
6) Precious part
精密件
补充资料：“质子-电子偶极-偶极”质子弛豫增强
“质子-电子偶极-偶极”质子弛豫增强
物理学术语。原子核外层中不成对的电子质量小，但磁动性很强，可使局部磁场波动增强，促使氢质子弛豫加快，从而使T1和T2缩短，这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子，所以其离子往往具有PEDDPRE，可用来作顺磁性对比剂，如钆(Gd)。Gd在外层有7个不成对电子，具有很强的顺磁性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条