建立了考虑低速干气密封端面各向同性粗糙度和静环静态角偏差的理论模型。
A theory model considering the isotropy roughness and static stator angular misalignment of dry gas seal was given.
采用化学分析、力学性能试验和金相检验等方法对该裂纹进行了分析。结果表明，此缺陷是由于试验环原始表面的粗糙度过大造成的。
By means of chemical composition analysis, mechanical property test and microstructure examination, the results showed that this defect was result of rough surface and not the crack existed in matrix.
研究了半环的粗糙子半环和粗糙理想的性质；
The paper suggests the properties of rough subsemirings and rough ideal.
粗糙的硬质塑料—五唱高调，软吹模具及面料环。
Five variously textured hard plastic, soft blow-mold and fabric material rings.
分析了弹性变形、表面粗糙度对润滑性能的影响，并提出了开槽环的设想。
We analyse the influence of the elastic deformation and the surface roughness for lubricating characteristics and give a thought of cutting groove in piston ring.
分析了弹性变形、表面粗糙度对润滑性能的影响，并提出了开槽环的设想。
We analyse the influence of the elastic deformation and the surface roughness for lubricating characteristics and give a thought of cutting groove in piston ring.
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