查询词典 phenomena

It was suggested that some unexplained abnormal geothermal phenomena may be caused by the Peltier effect when the earth current flows along the interfaces between two conductive minerals.

摘 要：为探究夏日冰洞地温异常的形成机制，结合热电学、矿物学、地球物理学等相关知识，提出一种基于热电效应的地温异常成因说。

Tesla contacted Peary before he left New York and asked him to observe any unusual phenomena on his journey to the North Pole.

特斯拉联系皮尔在他离开纽约，并要求他遵守任何不寻常的现象在他的旅程北极。

The phenomena he mentions stem from the police state, and are not typical of National Socialism, even if it was typical of the Nazis to revert back to them.

他所提到的现象根源在于警察国家，并不是国家社会主义所特有的，即便它是纳粹党所特有的。

Based on the return map and the principle of closed vectors, a new method is proposed to extract unstable periodic orbits embedded in chaotic attractors. As examples, the UPOs embedded in chaotic attractors of Logistic, Hénon and Lorenz are extracted respectively by this method. And our results of Skewed Hénon map also be compared with Nusse's. These results suggest that this method is valid for unstable periodic orbits from period one to period infinite of arbitrary dimension chaotic system. The dynamic considerations of spiking and UPO coding for individual neuron and neural system under external periodic and chaotic exciting stimulus also be studied in this dissertation. A lot of spiking phenomena, such as synchronization, period, and chaos appear alternatively with the changing of the stimulus frequency. For the small stimulus frequency the neuron could completely convey the periodic signal in synchronous anti-phase into interspike intervals sequences. For the slow time–scale chaotic input, the output two ISI sequences are reciprocally related to input signals, and their oscillation wave shape in time course can be derived from that of the input signals variation, furthermore, the similar input sequence and order of UPOs, distribution of LES and value of KYD remain in attractors reconstructed from ISI sequences.

发现周期信号在单个神经元传递过程中，随着激励频率的改变，神经元输出的峰峰间期interspike interval时间序列呈现出周期、混沌和准周期的交错变化，特别当外加激励信号频率较低时，周期信号可以通过神经元ISI序列以反相同步的周期运动形式传递下去；同时无论是周期还是混沌激励信号，在神经系统中的传递均与其自身强度和神经元之间的耦合强度的大小密切相关；快变时间尺度的混沌激励信号在耦合的神经系统传递过程中，会造成大量基本信息的丢失；而慢变时间尺度的混沌激励信号在神经系统传递中，它的非线性特征信息，如混沌吸引子、不稳定周期轨道、Lyapunov指数谱和分形维数，会通过系统输出的ISI序列部分地重现出来，如与输入慢变时间尺度的混沌激励信号相比，神经系统输出的ISI序列具有：相似几何形状的混沌吸引子、相近的Lyapunov指数谱和分形维数、局部结构相同的不稳定周期轨道的排列方式。

"Crude microscope s date to the mid-15th century, but not until 1674 were the powerful microscope s of A. van Leeuwenhoek able to detect phenomena as small as protozoa."

原始的显微镜可追溯到15世纪中期，但直到1674年列文虎克才发明高倍的显微镜，能观察到小如原生动物的现象。

"Crude microscopes date to the mid-15th century, but not until 1674 were the powerful microscopes of A. van Leeuwenhoek able to detect phenomena as small as protozoa."

原始的显微镜可追溯到15世纪中期，但直到1674年列文虎克才发明高倍的显微镜，能观察到小如原生动物的现象。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。