not very effective meaning in Chinese
效果不大
Examples
- Colour filters are not very effective in isolating narrow spectral bands .
一些滤色片不能很有效地分离狭窄的光谱带。 - The falling speed of cloud droplets is small and falling cloud droplets are not very effective in scavenging smaller particles .
云滴下落速度不大，下降的云滴对清除较小粒子并不十分有效。 - Attacking them with simple weapons is not very effective
普通武器的攻击对其效果并不显著。 - The result of chemical prevention tests was not very effective
此外，化学杀菌剂林间防治效果不明显。 - However , it is not very effective in highly polluted water
但要注意的是bti在污水中的防治效果欠佳。