活动用户率表明有多少不同的用户在规定间隔内是活动的。

Count. The active user rate shows how many different users were active in the indicated interval.

youdao

一直以来，许多业内管理人士及飞行员都认为中国在飞行高度层垂直间隔上的规定过于谨慎，甚至可以说是守旧。

Many industry officials and analysts have long felt that China's extra vertical-airspace buffer has been so cautious as to be antiquated.

youdao

与此类似的一幕场景也出现在带槽轮胎上，新的规则规定，所有的轮胎都必须在纵向有4条间隔50毫米深至少2.5毫米的连续沟槽。

This led to the familiar sight of 'grooved' tyres, the regulations specifying that all tyres had to have four continuous longitudinal grooves at least 2.5 mm deep and spaced 50mm apart.

youdao