1、群聚不足
... unconnectedgate独立门 underbunching群聚不足 undercoat底层 ...
2、电子欠集聚
... underbeadcrack焊道下裂纹 underbunching电子欠集聚 underburden下伏岩层 ...
3、欠集束
... under insulation 地下绝缘... underbunching 欠集束... undercompounded 低复绕...
4、群集不足
...群集本能 herd instinct群集不足 underbunching群集抽样 mass sampling ...