四线的

The four Palace Roof Suites feature private rooftop terraces with a 180-degree view of the Bosphorus, across to the Bosphorus Bridge on one side and the distant skyline of the Old Town on the other.

四宫的屋顶套房功能私人天台梯田，一个180度的视角的博斯普鲁斯，跨向博斯普鲁斯大桥的一方和遥远的天际线的老城区对其他。

In this research , a mathematic model is built for coverting internal coordinates into rectangular coordinates and calculating nucleus distances, bond angles and bihedral angles in a molecule.

本研究课题建立了将分子中原子的自然坐标变换成直角坐标，计算任意两个原子的间距，求解任意三个原子核连线的夹角和任意四个原子构成的二面角的数学模型。

This invention relates to a cascade multiple zero-type matrix rectifier, in which, a general input filter is connected between a net and a step-down transformer to get sine-wave input current, the step-down transformer includes n secondary windings with Yn spliced mid lines, the phase of all the three-phase windings is the same, the rectifier array is arrayed in a 1 row x n lines by n zero-matrix rectifier units, each line of which is connected with the seconday winding of the step-down transfornmer, and the outputs of the rectifier units are serial orderly to form a DC output, the general controller is responsible for regulating work of the entire system and connected with the branch controllers by signal cables to control the work of the rectifier units in the array.

本发明涉及一种级联多重化零式矩阵整流器，总输入滤波器连接在电网与降压变压器之间，滤波得到正弦波形的输入电流，降压变压器有n个Yn接带中性线的次级绕组，所有三相绕组相位相同，整流器阵列由n个零式矩阵整流器单元排成1列×n行的阵列，阵列中每一行与降压变压器的一个次级绕组对应连接，阵列中整流器单元的输出依次串联，形成一路直流输出，总控制器负责控制调节整个系统的工作，并通过信号电缆与各个分控制器联络，控制整流器阵列中每个整流器单元的工作。本发明由低压小功率的变换器串联得到幅值可调的高压直流电源，同时在电网侧得到位移为零的输入电流，具有网侧四象限运行能力等优点，适用于中高压直流供电领域。

Three, S, M Series Atomic Absorption Spectrometer using a new Echelle optical system, providing unmatched detection limit; unique four-button background deuterium lamp technology, a more accurate calibration results can be as high as 3A background correction ; patent protection Stockdale two-beam technology, has been very high sensitivity and signal to noise ratio; communicate unique background deduction Zeeman graphite furnace technology; unique ELC Long Life graphite tube; GFTV unique visualization technique by graphite furnace

三、 S 、 M 系列原子吸收光谱仪采用全新的中阶梯光栅光学系统，提供无与伦比的检出限；独特的四线氘灯扣背景技术，校正结果更准确，可校正高达3A 的背景；专利保护的 Stockdale 双光束技术，得到极高的灵敏度和信噪比；独特的交流塞曼石墨炉扣背景技术；独特的 ELC 长寿命石墨管；独特的 GFTV 石墨炉可视技术

S, M Series Atomic Absorption Spectrometry in a new Echelle optical system, providing unparalleled detection limit; Four unique background deduction of deuterium lamp technology, the results more accurate calibration can be as high as 3A background correction; Patent protection Stockdale dual-beam technology, are the sensitivity and high signal to noise ratio; unique exchange Zeeman background deduction graphite furnace technology; ELC unique long-life graphite tube; GFTV unique graphite furnace visualization technique

一、 S 、 M 系列原子吸收光谱仪采用全新的中阶梯光栅光学系统，提供无与伦比的检出限；独特的四线氘灯扣背景技术，校正结果更准确，可校正高达3A 的背景；专利保护的 Stockdale 双光束技术，得到极高的灵敏度和信噪比；独特的交流塞曼石墨炉扣背景技术；独特的 ELC 长寿命石墨管；独特的 GFTV 石墨炉可视技术

In order to let the active power filter could be used in 3-phase 4 wires circuits, a new method of harmonics detection is given in this paper, which is based on p-q method and ip-iq method of the instantaneous reactive power theory. This method remove the zero current.

综合运用瞬时无功理论中的p-q法和法，提出了一种新的基于瞬时无功理论的有效的三相四线制谐波检测新方法，此方法能将三相电流中的零序电流剔除。

We can imagine our fourth-dimensional selves branching out from our current moment into the fifth dimension, but no matter where you go from here the "great child inventor" timeline is not one of the available options in your current version of time --"you can't get there from here"-- no matter how much choice, chance, and the actions of others become involved.

我们可以通过从现在的我们岔路到第五维来想象四维的自己，但是无论你从现在的哪里离开，那个&发明家孩子&的时间线并不存在于你现在的时间选项中。&你并不能从这到那&--不管包括了多少选择，机会，以及别人的行动。

For example, zero-dimensional, one-dimensional line, the two-dimensional surface, three-dimensional three-dimensional, and even four-dimensional space-time.

比如，零维的点、一维的线、二维的面、三维的立体、乃至四维的时空。

For example, the zero-dimensional, one-dimensional line, the two-dimensional surface, the three-dimensional to three-dimensional, as well as four-dimensional space-time.

比如，零维的点、一维的线、二维的面、三维的立体、乃至四维的时空。

Even for the German sees of the emperor, Henry IV,[5] a bad ruler, the pope did not take the aggressive line to which the root and branch declaration might have seemed the prelude.

甚至认为，德国的皇帝，亨利四世， [ 5 ]一个坏的统治者，教皇没有采取积极线的分支的根源和可能似乎宣言的前奏。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。