Objective To investigate the clinical value of mobile chest radiograph with sub-high kilo-voltage.

Study on CO_2 welding process based on high-speed photography and electronic signals analysis;

The generation process of wave insert's sticking failure is recorded t hrough high-speed photography.

According to observation and analysis rock blasting high-speed photography experiment for deferent solid medium, the basic law of erack developing, and crack length and crack developing speed have been revealed under the deferent blasting methods.

Study on cone ring and traveller by high speed photography metod;

High speed photography measurement of impulse coupling coefficient based on compound pendulum model;

High speed photography is an effective testing instrument in welding arc physics research work,but current high speed photography has not solved the problem of multi signal waveforms synchronizing to photograph pictures.

Using high speed photograph to analyse movement of throwing transplantation of paddy seedling;

The high speed photograph of welding process, the composition analysis and microstructure observation of welding seam were carried on the investigated electrode.

The research of blast,combustion,armour piercing,trajectory and aviation posture can t be done without high speed photograph in national defence science and technology research field.