This paper simply introduces the work principle on planting apparatus with twin conveyer belt and analyses the pressure and state of motion of the nutritive cube on twin conveyer belt, sets up model of motion of nutritive cube, tests and analyses the steady of the nutritive cube in motion and influence of frequency of throwing nutritive cube on seedling erection rate of this cube and proofs built model, finds out the limit and the optimum frequency of throwing cube when structure parameter is fixed.

The threshold speed and the typical characteristics of the oil whip of the system are simulated under the nonlinear model of oil film force, and the state of motion and type of the bifurcation are analyzed by Floquet multiplicators which is computed by the shooting method .

After reduction, the effective numerical method is adopted to explore the response and stability information of the system, and the state of motion and type of the bifurcation are analyzed by Floquet theory.

The second part, obtained from the theoretical analysis, has established the pitching and hangs swings the movement the mathematical model, and by the different frequency regular wave and the irregular wave took the SWATH ship the perturbation signal, studied it under the different wave action pitching, hangs swings the state of motion.

Mathematical expression for identifying the target miss in azimuth is inferred by analyzing the relative state of motion of the missile and target in the rendezvous phase.

Based on the present state of motion control system courses,this paper introduced how to design experiments based on Matlab Simulink & Power System Blockset . The simulation examples were offered.

The theoretical details of periodic state of motion of a liquid (Newtonian) in a narrow annular gap between long vertical coaxial cylinders is given in a new way.

Equations which are linearized in a neighborhood of the stationary state of motion are given, the algorithm of solution that is based on the composition of the methods of discrete curls and finite differences is described.

its resistance to a change of state of motion) of a gamma-emitting nucleus could be exactly the same before and after emission if the internal configuration energy of the nucleus would be correspondingly altered in the process.

The same is true for the postulate of constancy of the two-way speed of light in vacuum in all frames independently of the state of motion of the emitting body.

The external superposition consists of those states that are reached only by change of state of motion, whereas the internal superposition contains all the states available to an observer in a single inertial coordinate system.

The process of decomposition of supersaturated tetragonal martensite during the first stage of tempering is investigated by considering the characteristics of motion of a carbon atom from one interstitial position to another within the martensite matrix. It is evident that not all the carbon atoms take part simultaneously in the process of precipitation, some remain in solution for a longer time, others shorter, some mobile, others stationary. By assuming that each transition from one state of motion to...

The process of decomposition of supersaturated tetragonal martensite during the first stage of tempering is investigated by considering the characteristics of motion of a carbon atom from one interstitial position to another within the martensite matrix. It is evident that not all the carbon atoms take part simultaneously in the process of precipitation, some remain in solution for a longer time, others shorter, some mobile, others stationary. By assuming that each transition from one state of motion to another has a definite probability, which is independant of time and carbon concentration but dependant on temperature and the nature of crystalline matrix, it can be shown that an isothermal decomposition curve can be expressed as a series with exponential terms, the coefficients of which are related to the distribution of carbon atoms in different states of motion. The agreement between this expression and the existing experimental data is satisfactory. The general tendancy of the variation of the coefficients with temperature is just what should be expected.

This method of the transportation along a cable is found by laborers of our nation when transport soil during their participating in hydraulic engineering constructions of large type. The method is to rack up two cables along the slope of a hill parallel each other, Between the cables a fixed pulley is hanged. A string surround the pulley. Two boxes C and D, prepared for containing the soil, is tied up at each end of the string When the box, say C, full of soil, slides down along the cable from above by gravity,...

This method of the transportation along a cable is found by laborers of our nation when transport soil during their participating in hydraulic engineering constructions of large type. The method is to rack up two cables along the slope of a hill parallel each other, Between the cables a fixed pulley is hanged. A string surround the pulley. Two boxes C and D, prepared for containing the soil, is tied up at each end of the string When the box, say C, full of soil, slides down along the cable from above by gravity, the vacant box D must then ascend up along the other cable simultaneously. Doing thus again and again, the soil is then transported to the bottom of the hill quickly. The distribution of tensions in the perfectly flexible cable, to be encircled tightly on the rough column, has been stated in some texts of mechanics. In this article, considering the mass of the string and the boxes, and the friction between the string and the pulley, and under the condition of inextensibility of the string, we have established a closing system of the non-linear ordinary differential equations which determines the motion of the boxes, and established also the formula for the distribution of tensions in the string in the state of motion.

In this paper, the authors treated the determination of the inertia parameters (virtual mass and virtual moment of inertia) by model tests. The accuracy of the experimental method was first checked by using ellipsoids, the inertia parameters of which were known, the error being about 2%. Then. a body of revolution with a vertical stabilizing fin and rudders at tail has been tested. By conducting such tests, the inertia parameters of the whole body and its components were obtained for different states of motion...

In this paper, the authors treated the determination of the inertia parameters (virtual mass and virtual moment of inertia) by model tests. The accuracy of the experimental method was first checked by using ellipsoids, the inertia parameters of which were known, the error being about 2%. Then. a body of revolution with a vertical stabilizing fin and rudders at tail has been tested. By conducting such tests, the inertia parameters of the whole body and its components were obtained for different states of motion of the body. The authors also suggested formulas for calculating these inertia parameters. Such formulas have taken into consideration the interferences between the appendage and the main body. Except for the rudder, which needs further investigation, the agree-ment between the calculated values and experimental results is satisfactory. Finally, the effect of the free snrface on the inertia parameters has been considered and denoted by coefficients of decre-ment. Experiments show that the parameters are nearly constant when the depth of immersion of the body is greater than three times the diameter.