This paper analyzes a simple plate crown model and gives an on-line model relevant to it.
分析中厚钢板板凸度计算模型并给出相应的在线数学模型。
RESULTS: the digital model was established and the resin crown was successfully made.
结果：得到了全冠的三维重建数字模型，成功制作出树脂全冠。
At the same time, based on the measured data of vault crown settlement, a grey-synergetic prediction model is established by use of the grey theory and the synergetic theory.
并结合灰色理论和协同学理论，基于实测拱顶下沉数据，建立塌方时间预报的灰色-协同理论模型。
Conclusion The way to establish models of telescopic crown dentures by model libraries is feasible and reliable.
结论采用模型库的方法对套筒冠修复体进行建模是可行且可靠的。
The mathematic model of the influence of roll crown variation on gap setting can be got by regression based on lots of calculation results.
并基于不同条件的计算结果，回归出轧辊凸度变化对辊缝设定影响的计算模型。
This paper introduced a four-body contact model of steel crown-the nodular cast-iron skirt-piston pin-connecting bolt for the steel-crown aluminum-skirt composite piston of locomotive diesel engines.
本文以机车柴油机钢顶铝裙组合活塞为对象，建立组合活塞钢顶铝裙连接螺栓-活塞销的四体接触计算模型。
The utility model discloses an umbrella opened-and-closed by one hand, which is composed of an umbrella crown, an umbrella pillar, a cylinder, an umbrella stick and a hand grab handle.
本实用新型公开了一种能够单手开、收的雨伞。它是由伞顶、伞柱、外套筒、伞骨、手握柄构成。
The utility model discloses an umbrella opened-and-closed by one hand, which is composed of an umbrella crown, an umbrella pillar, a cylinder, an umbrella stick and a hand grab handle.
本实用新型公开了一种能够单手开、收的雨伞。它是由伞顶、伞柱、外套筒、伞骨、手握柄构成。
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