The principal modifications are as follows:the flight g-load is improved from 7g to 8g or larger in order to enhance the maneuver performance of flight;the action radius is raised from xxx km to xxxx km and above;the store stations on a lower surface of the wing are increased to 8 positions.

Research of rural suitable farming radius in north Shanxi yellow soil inter-vale area;

Effect of rotational error of precision centrifugal main axle on working radius;

The article presents the calculation formulas for spindle displacements and puts forward the calculation methods for the influence of dynamic unbalance on the centrifuge working radius and for the misalignment angle.

The effect radius of ecological field on the population of Quercus liaotungensis was decided as 15 meters and the ecological interference of Fraxinus rhynchophylla and Lespedeza bicolor population has obvious heterogeneity.

Using regression analysis method,illustrated by QL3-40 type tyre crane,the relation between the hoisting weight and operating radius of crane is approached,and easy and practical formula is founded.