| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an accessory such as a necklace using silicon, wherein a crack or a chip hardly occurs. <P>SOLUTION: This spherical accessary contains ≥99 mass% of silicon. When magnifying plane views of the accessary from optional three directions six times, thereafter binarizing them, and blackening recessed parts appearing in the plan views, the average of the numbers of black points in each of which a long side exceeds 1 mm is five or below per area 50 mm<SP POS="POST">2</SP>of each plan view. <P>COPYRIGHT: (C)2012,JPO&INPIT |
