contraction cavity

Taking 195T piston mould as an example, this paper studies the problem of contraction cavity encountered during the production of thick-top pistons.

以195t活塞模具为例，研究了在生产厚大顶部活塞毛坯时所遇到的缩孔问题。

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This contraction increases the volume of the thoracic cavity and lowers the pressure inside the lungs.

这个收缩活动增加了胸腔的容积,降低了肺部的压力.

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The reason resulting in contraction cavity in top of 195T piston combustion chamber in practice was analyzed, and the countermeasures of eliminating the contraction cavity were taken.

研究了在生产195T活塞毛坯时所遇到的燃烧室顶部缩孔问题，对其产生原因进行了分析，并提出了消除缩孔所采取的措施。

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The effect of electromagnetic stirring ( S-EMS? F-EMS) on center equiaxial crystal zone proportion, central crack, contraction cavity, looseness in horizontal concasting round billet has been tested and analyzed.

试验和分析了电磁搅拌（S-EMS、F-EMS）对连铸圆坯的中心等轴晶区比率、中间裂纹、缩孔、疏松的影响。

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Elastoplastic analysis on contraction of spherical cavity under drainage

排水条件下球形空腔收缩问题的弹塑性分析

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It is concluded through analysis that the combustion chamber contraction cavity of the thick-top piston is mainly caused by the defect of the mould and the inefficiency of the water-cooling system.

经过分析得出结论：造成厚大项部活塞毛坯燃烧室缩孔问题的主要原因是由于模具本身的弊端和水冷系统效果不佳。

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In each dose group, no significant changes were found in male genital pathology tests and some of the highest dose group of female uterine wall contraction reduced the uterine cavity and uterine tumors were observed.

雄鼠生殖器官病理学各剂量组检查均正常，但是最高剂量组部分F1代雌鼠子宫壁出现萎缩、子宫腔缩小以及出现子宫肿瘤。

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