The public name has come to represent the generic name for a twoway TV product, even though there are many competing variations. 虽然有许多竞争产品,这个通用名字已经变成表示这类双向电视产品的名字。
In some cases, particularly in competitive product comparisons, summative studies are designed to yield quantitative data that can be tested for statistical significance. 有些情况下,尤其是竞争产品比较中,在总结式研究中可以产生量化的数据,进而用于统计显著性检测。