查询词典 length

In 1976, the International Astronomical Union revised the definition of the AU for greater precision, defining it as that length for which the Gaussian gravitational constant takes the value 0.01720209895 when the units of measurement are the astronomical units of length, mass and time.

但实际上地球绕日的轨道不是一个圆形，而是一个椭圆形：最初天文单位的定义就是上述椭圆的半长轴的长度。1976年，国际天文学联会把一天文单位定义为一颗质量可忽略、公转轨道不受干扰而且公转周期为365.2568983日的粒子与一个质量相等约一个太阳的物体的距离。

The influence of several parameters including injection rate of nozzle exit, the ratio of length between nozzle and inner gular tube, the ratio of length between gular tube and it's inner diameter and back pressure on the performance of gas solid injector is analyzed.

分析了喷嘴出口射流速度、喉嘴距、混合管段尺寸及背压等参数对气固喷射器性能的影响，结果表明：存在最佳的喷嘴出口射流速度、喉嘴距以及喉管长与其内径之比使得固气比达到最大值；而背压的增加则不利于提高喷射器性

The axial direction and radial direction spectrum is blue-shift or red-shift. On axial direction, the blue-shift or red-shift increases with the relative propagation distance, truncation parameter, refractive index constant increases and temporal coherence length decreases, and the spectral-shift gurgitation becom gragually steady. On radial direction, spectral switches appear, and the truncation parameter, spatial coherence parameter, temporal coherence length and refractive index constant also influence critical position and transition height et al.

光谱沿轴向、径向均出现蓝移或红移，随着相对传输距离、光阑截断参数、空间相干参数及折射率结构常数的增大，脉冲时间相干长度的减小，轴向光谱蓝移量或红移量逐渐增大，并且由明显地起伏逐渐趋于稳定，沿径向出现了光谱开关，光阑截断参数、脉冲时间相干长度、空间相干参数和折射率结构常数对光谱开关的数目、光谱开关的临界位置和光谱跃迁量等也产生影响。

Would you like to take a profile, a half-length or a full-length photo?

你要照侧面照\半身照、还是全身照？

Size:10cm length, that has a half-length of traditional brush.

超短：长度仅10cm，为传统牙刷一半长度。

One is the Pinglin Pilot tunnel with a diameter of 4.8m and a length of 12.9km, and the other is called the Shihlin Headrace tunnel with a diameter of 4.53m and a length of 5.5km.

士林水力工程头水隧道贯入率随岩体分类之良窳而渐次降低(2.5～1.9m/hr)，机具利用率亦由四成以上降至三成左右。

In general, this paper includes several parts, shown as the following: The first part summarizes the background and outline of stock index future and introduce briefly its local status and CSI 300 stock index future contract. The second part has a retrospect of the main academic papers of both local or overseas, and also a discussion of relevant hedge strategies and models, to lay a solid theoretical foundation for the empirical analysis and test for the operation process of hedge in latter parts. The third part outlines the principle, key factors and real operation process of hedge. Moreover, it makes a empirical analysis on popular hedge models with HK Hang Seng index. In the end, it test the hedge effect of trading on IF0706, CSI 300 stock index future contract, with CCB select-growth securities fund as present underlying. The fourth and also the last part, explores how to define hedge ratio in china mainland market. It includes the stability test ofβfor local securities portfolio, adjustment of historicalβand best data length for estimation of historicalβ, etc. Also, the thesis makes some beneficial experiments on the definition of best data length for estimation of historicalβ, survey of fashion forβand variation for industryβs. Fortunately, it's got some meaningful results.

按照以上研究思路，本论文论述由以下几个部分构成：第一部分，简要概述股指期货产生的背景和基本情况，对国内股指期货进程和沪深300股指期货合约进行简单介绍；第二部分，回顾海内外股指期货避险研究的主要文献，讨论相关避险策略及避险模型，为后面套期保值策略如何有效运用的实证分析和检验提供理论基础和依据；第三部分，对套期保值的原理、关键因素及实际流程进行概述，并采用香港恒生指数对常用的几种避险模型进行实证分析，最后一揽子以建信优选成长股票型基金为现货标的，实际检验以沪深300股指期货模拟交易IF0706产品进行对冲时的套期保值效果；第四部分，探讨国内确定避险比率的过程，包括国内股票组合β值的稳定性检验、历史β值的修正及估计历史β值的最佳数据长度等，通过数据分析，本文在寻找估计β值的最佳数据长度和考察风格、行业β值的差异上做了较为有益的尝试，并得到了有助于现实操作的结果。

The total RNA was extracted from spleen of Xiphophorus helleri which had been immunized for two weeks. The core sequence was amplified by RT-PCR. The cDNA end sequences were amplified by RACE, and then the full-length cDNA of sIgM heavy chains gene were obtained by putting all of them. The full-length sequence contains the immunoglobulin signature sequence: FKCIANH.

以免疫两周的剑尾鱼为材料，提取脾脏总RNA，通过逆转录－聚合酶链式反应扩增出分泌型免疫球蛋白M(secretory immunoglobulin M， sIgM)重链基因的核心序列，再应用3'和5'快速扩增cDNA末端方法扩增其末端序列，拼接后获得剑尾鱼sIgM重链全长cDNA序列。

The length of the work by drawing the corresponding part of the solid line of work, so that the time coordinates in the horizontal projection of length equal to working time ; virtual work because they do not account for ...

按各工作的时间长度绘制相应工作的实线部分，使其在时间坐标上的水平投影长度等于工作时间；虚工作因为不占。。。

Finally, the run-length of data points are extracted by horizontal projection, and the modules corresponding to the run-length are taken to decode.

而拍照所造成条码边界的形变，利用反透视转换(Inverse Perspective Transformation)来校正。最后以水平投影的方式撷取出资料点的长度，转换成对应的模组来进行解码的动作。

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。