| 摘要 |
<p>A monofilament string trimmer line (20, 30 or 40) exhibiting reduced noise and reduced drag has a uniform oval cross section throughout its length. The monofilament line is spirally twisted about its longitudinal axis over at least a portion (22, 30B, 40B, or 52) of its length to reduce noise production and drag. <IMAGE></p> |
