Even by the end of the 19th century, however, new technologies began to emerge, many of them based on the same principles first developed for the telegraph system.
虽然到了19世纪末新的科学技术开始崛起，但是许多技术都是基于与最初发明电报同样的原理。
In 1913, the Danish physicist Niels Bohr was the first to propose a theory of the atom based on quantum principles.
1913年，丹麦物理学家尼尔斯·波尔第一个提出基于量子原理的原子理论。
From first principles, just based on the statistical math we've seen so far.
从第一性原理，就是基于前面学过的统计数学。
Based on the assumptions and principles of network optimization problems, the real problem is, first, formulated mathematical model. It will be solved with the help of computers.
首先将实际问题按照网络最优化问题的一般假设和原理建立数学模型，用计算机程序进行求解。
Taking "the Principles of Communication" as a example, this paper analyses what needed to do in the first class based on the teaching objects and requirements.
本文以《通信原理》课程为例，从教学对象和教学目标入手，分析了上好第一堂课需要做的主要工作。
This paper first introduces principles of synchronous and asynchronous identification based on time and events, and then gives a through analysis of security in dynamic identification techniques.
简要介绍基于时间、基于事件同步、非同步认证原理，分析了动态认证技术安全性。
The discussion was made about the above phenomenon based on related results derived from the first-principles calculation.
结合第一原理计算的相应结果，对上述现象进行讨论。
Based on the density functional theory, the first principles calculation was performed to investigate the bulk, surface copper and the diffusion in the copper thin film.
本文应用基于密度泛函理论的第一性原理赝势法，较系统地研究了铜体相和表面相，以及锂离子在铜薄膜中的扩散行为。
First of all, the two undamped multi-freedom torsional vibration models of DMF under idling and driving condition are built based on the principles of vehicle power train equivalent torsional model.
首先，根据汽车动力传动系统的扭振当量原则与方法，分别建立了怠速工况与正常行驶工况下发动机、双质量飞轮以及传动系统的无阻尼多自由度扭振当量模型。
Based on the assumptions and principles of network optimization problems, the real problem is, first, formulated mathematical model.
首先将实际问题按照网络最优化问题的一般假设和原理建立数学模型，用计算机程序进行求解。
The structural stabilities and electronic structures of W atomic chains are studied by employing first-principles plane wave pseudopotential method based on the density functional theory.
使用基于密度泛函理论的第一原理平面波赝势法，研究了W原子链的结构稳定性和电子结构性质。
Based on analyzing the demands to DCS of the first unit for producing ammonia by coal slurry gasification inland, the principles for disposing hardware and software of DCS were put forward.
在分析了国内第一套水煤浆加压气化制氨工艺对DCS要求的基础上，提出DCS硬件与软件的配置原则。
This paper first discusses the general principles of the logical control design for collection, and then presents its design method based on the CPLD technology.
该文在论述采集逻辑控制设计的一般原则的基础上，提出了基于CPLD技术的设计方法。
First based on system needs to propose design objectives and principles, then the system architecture and functional structure of the design.
首先根据系统需求提出系统设计目标和原则，然后分别对系统技术架构和功能架构进行了设计。
Based on the immune principles, this paper at first analyse the immune algorithm by solving TSP problem which improves the ability of population and increase the holistic performance.
本文利用免疫的有关概念和理论，先对免疫算法性能做分析，设计一个免疫算法求解tsp问题，验证基于免疫的算法有利于整体的相对稳定和性能的提高。
During the first half of the century, short-range forecasts were based on synoptic principles, empirical rules and extrapolation of pressure changes.
本世纪前半期，短期天气预报常以天气学原理，经验规律以及对气压变化进行外推为基础。
First, the fundamental principles are introduced based on the system; and the operation process, parameter setting and structural design of this device are analyzed.
系统采用摄像头等光学测量仪器和编码器、罗盘等定位设备达到坐标测量的目的。
The first level of taxonomy of culture, which is based on principles of culture, and other levels constitute the whole taxonomy. The taxonomy of culture are discus…
文化的分类体系是以文化的要素类型为分类的第一层次，统一着不同亚层次类别而结构起来的系统体系。
Finally the electronic and magnetic properties of diluted magnetic oxides nanocrystallites are investigated from first-principles calculations based on DFT.
最后我们采用基于密度泛函的第一性原理电子结构计算方法研究分析了纳晶稀磁氧化物的电子结构和磁性。
Finally the electronic and magnetic properties of diluted magnetic oxides nanocrystallites are investigated from first-principles calculations based on DFT.
最后我们采用基于密度泛函的第一性原理电子结构计算方法研究分析了纳晶稀磁氧化物的电子结构和磁性。
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