Cosmic rays are high-energy particles that constantly bombard Earth from space and are influenced by the sun's magnetic ...
Abstract: Grain security is an important strategic issue, which is associated with the development of economy, social stability and national independence. In order to ensure national grain security, ...
The precise time interval measurement is the key in many applications. Recent-developed linear optical sampling method has pushed the time interval measurement to the femtosecond region. However, ...
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