| 摘要 |
<p>A FORMABLE BIAXIALLY-ORIENTED POLYESTER FILM HAS A DIFFERENCE OF NOT MORE THAN ABOUT 0.007 BETWEEN THE MAXIMUM AND MINIMUM VALUES OF FACE ORIENTATION COEFFICIENT AS DETERMINED IN A 20 SQUARE CM REGION OF THE FILM, AND AN AVERAGE FACE ORIENTATION COEFFICIENT OF ABOUT 0.11 TO 0.15 AS DETERMINED IN SUCH FILM REGION.</p> |
