For effects of the light loss, dispersion and depolarization through fiber, the communication distance is limited. In free space, the loss, decoherence effects are small, the atmosphere equivalent thickness is only five kilometers. If the communication distance can been broken, satellite-based global quantum communication will be possible. So the free-space quantum communication becomes a new focus research field.
由于光纤损耗大、色散、退极化等因素使得通信距离有限；而自由空间损耗小，退相干效应小，大气层等效厚度只有5公里，如果能突破这个距离，基于卫星方式的全球化量子通信将成为可能，所以自由空间量子通信成了一个新的研究热点。
Study indicates that Gondwana dispersion, Asian accretion and geological evolution of the Tethyan tect onic belt were controlled by the global latitudinal tectonic system.
研究表明，冈瓦纳的裂散、亚洲的增生和特提斯构造带的演化都受控于星球级纬向构造体系。
According to the global identification technique based on parametric dispersion and the multi-layer distributed component technique, a model identification software is designed for complex industrial processes with characteristics of open, generalized and component. The detail design scheme and functions are introduced as well.
根据一种基于参数方差的全局辨识技术，利用多层分布式组件技术设计了一个面向复杂工业过程的开放、通用、组件化的模型辨识软件，详细介绍了该软件的设计方案和功能。
Relationship Between Early Repolarization in Inferolateral Leads and Idiopathic Ventricular Fibrillation Effect of Acute Myocardial Ischemia and Early Reperfusion on Global Repolarization and Dispersion of the Left Ventricular Epicardium in Vivo in Swines
急性心肌缺血和再灌注早期对猪在体左心室心外膜复极及离散度的影响