The synchronization problem for heterogeneous harmonic oscillators is investigated. In practice. the communication network among oscillators might suffer from equipment failures or malicious attacks. The connection may switch extremely frequently without dwell time. https://www.ngetikin.com/super-value-1-2-in-Tobacco-Road-Acacia-Distressed-Engineered-Hardwood-Flooring-4-8-in-Wide-Sample-quick-super/