High speed increasing of economy, exterior market not enough developing and homogeneity of community culture are sustaining condition of the inner competing mechanism operating.
经济高速增长、外部市场欠发达和社会文化的同质性等，是该内部竞争机制运作的条件支持。
The flow-induced self-sustaining oscillation and standing wave resonance of protruding and trap cavities are studied at the low speed range.
本文研究了低流速范围内突出式和陷落式圆柱形腔的流激自持振荡和驻波共振问题。
Cross sustaining device is one of the key parts of speed increased freight car bogies.
交叉支撑装置是提速货车转向架的关键部件之一。
Cross sustaining device is one of the key parts of speed increased freight car bogies.
交叉支撑装置是提速货车转向架的关键部件之一。
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