Calibrating　spectral response of system based on two_point temperature with blackbody ,the transmittance spectra of CO_2 IR absorption band was analyzed and calculated depending on the measurement data.

The crystal was characterized by four-crystal X-ray diffraction,chemical etching,optical microscope,transmission spectra and atomic force microscope(AFM).

In this article,we studied this phenomenon by means of transmission spectra and found that different anneal conditions and different dopants could greatly influence the colors.

Effect of nucleating agents on morphology and permeability of iPP porous membranes via thermally induced phase separation;

Mechanical properties, fluid permeability, acoustical properties, heat conductivity and damping capacity were tested by testing methods and testing units that we design.

The covering material provides a channel which allows matter exchange and a better permeability for enough gas passing through.

The experimental results show that the optical transmission spectra range and two-wave mixing gains are smaller in the high doped LiNbO_3 crystals.

Photorefractive holographic storage and optical transmission spectra properties were studied in a series of double-doped LINbO3 crystals including different dopants, different concentrations of dopants, and different as-grown samples (or reduced or oxidized) .