The analysis shows that the L value of all composite samples <br>is significantly lower than that of BTS, and L <br>basically decreases with increasing BT content.
The analysis shows that the L values of all composite samples<br>are significantly lower than BTS, and L<br>With the increase of BT content, the basic decrease.
This analysis shows that the L value of all composite samples<br>Are significantly lower than BTS, and l<br>With the increase of BT content, it basically decreased.