In turn, this article analyses the cause of small contribution rate and put forward the proposal to reestablish the "accumulating circle" mechanism of the human capital forming in countryside.
文章最后对我国农村人力资本低贡献率的原因进行了解析，并对重构农村人力资本形成的“循环累积”机制提出了政策建议。
Toward the migrating mechanism of "pump suction", it discusses the migrating model and the accumulating law of natural gas through fault.
针对“泵吸”运移机制，对天然气沿断裂运移冲注模式及聚集规律进行了探讨。
Furthermore, the paper introduces the mechanism of applying nozzle airflow purging technology to prevent accumulating dust in wind fan blades and its using effectiveness.
针对锅炉引风机频繁积灰振动问题，分析了引起吸风机积灰振动的主要因素，并介绍了应用喷嘴气流吹扫技术防止引风机叶片积灰的机理及其使用效果。
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