Correlation analysis equations about water vapor content and liquid water content,water vapor content and rainfall intensity,liquid water content and rainfall intensity were established according to the ground dual-channel microwave radiometer,laser particle detector and automatic tripper-hopper rain gauge dump synchronous observation data during July-August in 2007.

The method and accuracy of rainfall rate (R) and liquid water content (M) measurements by dual linear polarization radar are analyzed by using aΓ drop size distribution (DSD) simulation and scattering calculation mode at 5.

Design of liquid forging die for shot's shell;

Research on Liquid Forging Mould Design Based on UG NX4.0;

Simulation of thin wall aluminum alloy shell by liquid die forging;

Study of mechanical performance of liquid die forging SiCp/ZL201 compound materials;

The Research and Application about Liquid Die Forging Technology;

In the paper, the hot crack for the forging die made by methods of squeeze casting is analyzed, how to reduce the hot crack is also given out.

The defects of forging die made by squeeze casting were analyzed , The corresponding protective measures were also given out.

In order to solve the questions uncovered, squeeze casting technique used as the process for critical steel castings of hammerhead was put forward in this paper.