查询词典 cavitation

By comparing and analysing, we obtain the variation of the fraction of volume of the vapour inside pump and the variation of efficiency. Thus we know the anti-cavitation and efficiency of the pump how were influenced by different methods of generate blades. The results are good reference for engineers majoring on hydromechanical mechanism

通过对不同叶片水泵內部气体体积和效率进行对比分析，得出了三种不同的叶片成型规律对水泵的抗空化性能和效率的影响，得到的结论对于轴流水泵的设计、改进有一定指导意义。

How to measure and analyze the phenomena in property of pump and hydroturbine is one of the most important field in cavitation and erosion research.

影响水泵与水轮机使用寿命与性能的主要问题是空化空蚀现象，在现场监测与分析水泵与水轮机的空化状态是空化空蚀研究的重要领域。

The structure of database of hydraulic model with excellent cavitation characteristic and the design process of the database are completely described, and the building of illustrational database of the single-stage pump and multi-stage pump were presented.

完整描述了高汽蚀性能水力模型库的结构及高汽蚀性能水力模型的设计过程，建立了单级泵和多级泵高汽蚀性能水力模型库。

Additionally,several models are established to study the cavitation and the cavity catastrophy insolid material.

另外，关于弹性固体中空穴萌生和空穴突变问题，建立了几个力学模型，用解析方法得到它们的分岔解。

The hydraulic system will be induced cavitation when the hydra ulic equipment is stopped for a long time or intermitted used and when the hydra ulic pump is void soak.

液压设备较长时间不启动或间断使用以及液压泵的吸空现象，均能使液压系统形成气穴。

The fracture reasons of high strength PC steel wire are analyzed, it's considered that center segregation, central cavitation, poriness and inclusion are the metallurgical reasons which lead to the facture of PC steel wire and in the rolling process, differential coping quality, microcrack caused by surface defect, abnormal microstructure caused by burnt and improper cooling velocity, the ears on the head of the wire, overlapping of the wire rod itself are the main reasons which lead to the facture of PC steel wire. At the same time, inappropriate pickling, differential phosphorization quality, the bad heat treatment quality, the generation of crack in the improper drawing and transverse crack caused by abnormal laying of the drawing die are also the reasons of the cracking of PC wire.

对高强度PC钢丝断裂原因进行了分析，认为连铸坯的中心偏析、中心缩孔、疏松和夹杂是导致PC钢丝断裂的冶金原因；轧制过程中，较差的修磨质量、表面缺陷导致的微裂纹，过烧以及不适当的冷却速度导致的非正常显微组织，盘条头部的耳子、盘条本身折叠是导致PC钢丝断裂的主要原因；同时，不恰当的酸洗、较差的磷化及热处理质量、不适当拉丝裂纹的产生、拉拔模具安放不正导致的横裂也是PC钢丝断裂的原因。

Greenleaf WJ,Boslsnder MF,Sarkar G,et al.Artificial cavitation nuclei significantly enhance acoustically induced cell transfection〔J〕.

超声介导SonoVue可对靶细胞产生一系列生物学效应，其中的空化效应可使细胞膜通透性增加〔1，2〕。

When plants are under drought stress or suffer from freezing_thawing cycles, water vapor or air occurs in tracheary elements, i.e, cavitation and embolism occurs in tracheary elements of plants.

在干旱和冬季反复冻融循环以后，植物体内的管状细胞容易充满水蒸气和空气，形成腔

Forces and relative vertebral movements during SMT to unembalmed post- rigor human cadavers: peculiarities associated with joint cavitation.

力和相对运动时表面贴装椎到unembalmed后严格人类尸体：空泡共同特点关联。

It is one of the efficient approaches that the air-film is accreted on blade surface of operative marine propeller for improving cavitation characteristics.

在船用螺旋桨桨叶表面充气以形成气膜是改善其空泡特性的有效方法之一。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。