Unattributable items shall be allocated to Licensed Service segments using the Attributable Cost Method.

三无法接或间接归属者，按已分摊成本法归属至各种电信业务。

Their biological activity is generally attributable to inhibition of NADH: ubiquinone oxidoreductase activity and thereby mitochondrial respiration.

这一类化所以具有很好杀虫活性，是由于对还原型烟酰胺腺嘌呤二核甘酸(NADH)抑制作用而阻断了线粒体呼吸。