它的存在是历史的必然，但目前对它的研究还是空白。
Its existence is the necessity of historical development, but it is still a vacancy of study on it.
目前，国内有关生计以及气候变化对生计影响的研究很少，相关的学术领域还存在着很大的空白。
At present, there are a few domestic researches of livelihood and the impacts of climate change on livelihood. The big gaps in academic-related fields need to be filled.
但是，在国家中心主义范式的约束下，现有研究仍然存在严重缺陷和不足，在跨国公司与相互依赖结合的部位仍然是一片空白。
With cost-benefit model, game theory and empirical studies, the IPE studies of interdependence have made great progress, but still left weak point, which mainly caused by the state-centrism paradigm.
然而在目前我国大部分地区关于应急物流方面的研究尚存在着很多薄弱和空白的地方。
However, in most parts of our country on the logistics of emergency still exist in a number of weaknesses and gaps in place.
与西方国家相比，我国城市社区建设和管理的时间并不长，理论和实践上还存在不少空白点亟待研究和解决。
Compared with Western countries, China's urban community construction and management time is not long. Theory and practice there are still a number of issues that must be studied and resolved.
建筑是一门研究空间的艺术，而留白是处理空白的艺术，两者存在研究的共通点。
Architecture is a art of researching space, and art of empty space is to deal with space, so both of them has common research point.
近年来的研究多集中在土人参的生物学特性、利用价值、栽培技术以及组织培养等方面，但在营养学、药理学、育种学及加工利用方面等方面的研究较少，甚至还存在空白。
The present research included its biological characters value in use planting technique and tissue culture and so on but the research on sitology pharmacology breeding and process was very poor.
然而，该研究领域目前仍存在很大的空白。
目前电励磁同步电机直接转矩控制研究在中国还是一个空白，其转子上存在阻尼绕组，必然对电机的动态行为产生影响。
The performance of electrically excited synchronous motor(ESM) drive is directly influenced by the rotor excitation current control strategy of ESM.
目前电励磁同步电机直接转矩控制研究在中国还是一个空白，其转子上存在阻尼绕组，必然对电机的动态行为产生影响。
The performance of electrically excited synchronous motor(ESM) drive is directly influenced by the rotor excitation current control strategy of ESM.
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