The front-end(FE) in the cluster distributes the requests to back-ends(BE) according to the layer-4 load balancing policy.

集群前端使用基于第4层的负载平衡策略将用户请求分发给后端；

youdao

Trinuclear carbonyl cluster compounds of Fe, Ru and Os were vaporized, ionized and dissociated by pulsed laser beam.

在自制的仪器上以脉冲激光溅射铁、钌、锇的三核羰基原子簇化合物，由原位质谱观察和分析溅射产生的正负离子。

youdao

This is because the Fe atoms in each cluster form a conjugated system and thus can have oxidation states between + 2 and + 3 values.

这是因为在每个集群中的铁原子形成一个共轭体系，从而可以有氧化态之间的+2和3的值。

youdao

This is because the Fe atoms in each cluster form a conjugated system and thus can have oxidation states between + 2 and + 3 values.

这是因为在每个集群中的铁原子形成一个共轭体系，从而可以有氧化态之间的+2和3的值。

youdao