In this paper, the research object is the XM18 spherical generator, in order to improve the dynamic behavior of the machine tool, the following aspects have been studied in this thesis: Firstly, based on the elasticity theory and finite element analysis theory, the finite element models of the lathe bed, dovetail, dovetail shelf, headstock, fanlike plank and millhead shelf, which were the main parts of the spherical generator, were built up using ANSYS9.0. And based on the modal analysis theory and FEM technology, the free modal and the constrained modal analysis of the main parts were studied. Accordance to the analytical results, put forword methods to optimize the key parts.

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Key words: pentaerythrite; drying; vibrated fluidized bed; modification

中圖分類號：TQ223.164；TQ051.892 文獻(xiàn)標(biāo)識碼：A 文章編號：0253–4320（2004）06–0051–02

This dissertation introduces the history, key technology, current status of nation and internation ,and the importance of MiroSot ; describes function theory and constitutes of MiroSot resumptively firstly ; then introduces machine structure in detail including the characters and choice of electromotor and the design and facture of hull; stresses on control circuit of soccer robot including the choice of control circuit and DSPs, basic circuit of soccer robot and control algorithmic of soccer robot.a new design based on DSPs is made; lucubrate radio communication subsystem including the origin of yawp and controlled method in radio communication finally, and a emitter is made, and hard base has gained to upbuild experiment bed of MAS.

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In the river sediment model with a movable bed , there are two key problems which are how to think about interaction of water and sediment and how to proceed the large distorted roughening to meet resistance similarity.

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It was considered that the control of the PRD fluid performance and the dosage of flow pattern adjusting agent PF-VIS were the key of the technique. The viscosity of PRD spudding fluid increased rapidly with the decrease of shearing rate, it indicated that it had good sand carrying ability. The spudding fluid was good capacity of high temperature stability under the low shearing rate, its viscosity was much higher than that of traditional drilling fluid, it was beneficial for cutting carrying in big deviated wells and preventing the formation of cutting bed.

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Human brain bridging veins may be the key point of brain vein blood outflow volume because of existing of "outflow cuff segment": ICP increased, outflow resistance increased, outflow volume reduced, then caused the aggravatation of vein blood deposition in vein bed. Such a sequent procedure formed an infernal circle: ICP increase-vein outflow reduce-vein blood deposition-ICP increase all the better.

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This call-out system use wireless compiled code transmission, use the one-chip computer to controll, store the sick bed number called out newly automatically, and circulation shows , the historical number uses and deletes the key to delete, domestic advanced wireless medical use call-out the system in whom traditional call make heavy improvement at the system.

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