In the past, research paid relatively little attention to the technological characteristics of IG. This study only selected three technological characteristics of IG.
In the past, the research has pay relatively little attention to the scientific and technological characteristics of IG, and this study selected only three scientific and technological characteristics of IG.
In the past, little attention has been paid to the scientific and technological characteristics of Ig. In this study, only three scientific and technological characteristics of Ig are selected.<br>