This paper analyzes the property of PDM and a nested transaction model which can improve concurrency of two phase locking mechanism.

本文分析了PDM中设计事务的特点，研究了PDM的嵌套事务模型以提高两段锁系统的并发性。

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This paper proposes a hybrid optimistic real-time transaction concurrency control method based on high priority two phase locking scheme (HORTCC-SHP2PL).

提出了一种基于高优先级两段锁的混合乐观实时事务并发控制协议(HORTCC - SHP2PL)。

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Beam coherent combination of two photonic crystal fiber (PCF) lasers is experimentally studied by using self-imaging resonator technique, and phase-locking of the two PCF lasers is achieved.

利用自成像腔技术进行光子晶体光纤(PCF)激光器光束相干合成的实验研究，实现了两光子晶体光纤激光器的相位锁定。

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