metal abundance造句

• And by 1600 explorers and colonists found gold metal abundance in the region.
• There are two main methods of determining metal abundances in nebulae.
• "Lower metal abundance means you can't make a planet as big as the Earth,"
• Its low bulk density ( ~ 3346 kg m  " 3 ) indicates a low metal abundance.
• In the case of IK Pegasus A, the estimated metal abundance is [ M / H ] = + 0.07 ?0.20.
• Given the large number of studies of metal abundances in galaxies with intermediate and high redshift mentioned in the Introduction, it may seem odd that systems similar to those described here have not been recognized previously ."
• Using the Advanced CCD Imaging Spectrometer on board the Chandra X-ray Observatory, Lopez observed the Galactic supernova remnant ( SNR ) W49B to understand the thermodynamic properties and explosive origin of the SNR . The observed electron temperature and absorbing column toward W49B suggest that the mean metal abundances are consistent with the predicted yields in models of bipolar / jet-driven core-collapse SNe.