head-to-head structure
3.The tool is used to implement automatic circulation of water and arbitrary adjustment of water head, of which structure is rational, experimental arrangement is proper and experiment of Bernoulli equation, the experiment of constant flow Bernoulli equation of ideal fluid, experiment of Poiseuille formula and the experiment of Pitot line-up measurement flow can be conducted.
4.The results show that the shape of martensite diffraction spot becomes a diffuse spike after aging, and its 3-dimensional profile appears to be two head-on 4-sided regular pyramids. Fourier analysis of the diffuse scattering suggests that martensite undergoes a spinodal decomposition during aging,the tweed-like modulated structure is composed of a dominant wave with wavelength of about 1 nm and non-dominant waves with longer wavelengths.
5.In order to insure that the streamlined shape of train head is consistent with its structure, the characters of the shape and structure were analyzed, and a design and manufacture integrative method of the shape and structure was developed on the ARX of AutoCAD and the Open I-deas of I-deas software flat roof.
9.The system structure, design principles and implementing techniques are discussed. VTE provides several stereoscopic displays and head-tracking devices which are based on different mechanisms. As an experimental platform, VTE will be of benefit to the investigation of Telepresence and Virtual Reality.
10.The forces in joining the copper pipe to the aluminum radiator through interference fit are analyzed and calculated,and a new technique of pipe screwing and expanding is introduced so that the force of moving forward when the pipe is being expanded is reduced.The structure and working principle of the expanding pipe head are described.The working principle of the designed screwing expander is explained in detail.The structure and characteristic of the special machine are introduced briefly.
