control foctor的用法和样例：
例句
- However, older beagles that received at least one of these interventions also did better than the control group.
不过，任何接受至少一种控制因素的试验组的表现都较控制组为佳。 - The capacity of an approach is measured independently of traffic and control factors and is expressed as the saturation flow.
进口道容量的度量以饱和流量表示，它同交通及控制因素无关。
