effective scanning periodic ratio

例句：

1. 1. The effective scanning periodic ratio is a critical factor in determining the effectiveness of a scanner.
   有效扫描周期比例是决定扫描仪有效性的一个关键因素。
2. 2. The manufacturer has introduced an improved version of the product with a higher effective scanning periodic ratio.
   制造商已经推出了一个改进版本的产品，具有更高的有效扫描周期比例。
3. 3. The new software algorithm significantly improves the effective scanning periodic ratio, making it more efficient and accurate.
   新的软件算法显著提高了有效扫描周期比例，使其更加高效和准确。