We expressed in the form of some inappropriate, we should not use the term theoretical density, but should the term bulk density. We have corrected in the text.
Our statement in the table is somewhat inappropriate and should not be used as the term theoretical density, but rather as volume density. We have corrected it in the text.
Our statement in the table is not appropriate. We should not use the term of theoretical density, but the term of volume density. We have corrected it in the text.<br>