后成

Then the digital signal is processed in digital field. At last DPTV converts the digital signal into analog signal and display.

数字处理电视是在模拟广播电视传输体制下，将接收到的模拟电视信号转换成数字信号，经过数字处理后再转换为模拟信号并显示输出。

Meanwhile, this detected voltage difference is amplified and filtered, and finally the processed signal is transmitted to the analog input of the DAQ card for further software operation, display, and storage.

其工作原理是利用DAQ卡类比输出通道，送出不同频率且幅值恒定的正弦电压信号，透过修正型Howland定电流驱动电路将电压信号转成电流信号加入体内，由量测电极取出电压信号经放大滤波后，把讯号送入类比输入DAQ卡，并在LabVIEW人机介面上做运算处理、分析、显示与储存。

Analytical results of differential scanning calorimetry DSC and X-ray diffraction XRD indicated that after compression molding,the melt temperature of PLLA crystals decreased while the degree of crystallinity increased.

差示扫描量热DSC分析和X-射线衍射XRD分析表明PLLA模压成棒后，PLLA的结晶熔点下降，微晶尺寸变小，而结晶度增大。

Feature of principal lines spatial distribution: detect the principal lines through edge detecting technology, and then divide the image of palmprint into blocks with same dimension, compute the mean and variance as feature; Feature of palmprint direction: divide the image into sub-images; compute the max angle of projection and coordinate of each sub-image, which stand for the direction and location of the line on the palm; Feature of moment invariants: compute the moment invariants of each sub-image and the whole image as feature.

掌纹主线空间分布特征：利用边缘检测技术检测出掌纹的主线，将图像分割成相同大小互不重叠的子图，提取每一个子图的均值和方差作为特征；掌纹线方向特征：将图像分成不重叠的子图，利用Radon变换求出每一个子图的最大投影角度和坐标，也就是子图内掌纹线的方向和位置，构造特征向量；掌纹不变矩特征：提取图像整体和分割后的子图的不变矩作为特征。

Firstly, the inner wall of artillery is illuminated by lighting lamp and then its image is obtained after reflecting by prism,lastly, Angle of twist is calculated through the analysis of digital image.

首先，用光源把身管内壁照亮，然后经过锥镜反射后内壁在CCD相机中成像，最后对该数字图像进行分析，计算得到缠角。

Because of wide spectrum bandwidth of the mode-locked laser, When the AOD works, the light spot of the 1 st diffraction order will be distorted by significant angular dispersion, thus reduces the spatial resolution of the image.

研究表明：由于飞秒激光在锁模情况下具有较宽的光谱带宽，经过AOD后的一级衍射光斑带有严重的角色散，导致光斑形状发生畸变，影响成像的空间分辨率。

The pulse width broadening of the femtosecond laser after angular dispersion wasdescribed,the pulse width expression at arbitrary propagation distance was provided,the pulse width broadening of the femtosecond laser by AOD was precisely predicted,thegeneral theory on pulse width broadening of plane wave,spherical wave and Gaussianbeam was deduced and the physical mechanism of pulse width broadening based on eachabove light beam model was revealed.

本文对随机扫描双光子显微镜中飞秒激光传输特性进行了系统深入的研究，完整解决了这一理论问题，发现了空间与时间色散通过角色散耦合的规律，为空间与时间色散同时补偿的方案提供了理论依据，基于此原理的单个角色散器件同时补偿空间和时间色散的方案高效解决了声光偏转器的色散补偿这一核心难题，为建立随机扫描双光子显微成像装置并应用于神经学研究奠定了基础：阐明了飞秒激光经角色散后的光斑展宽规律，获得任意传输距离处的光斑解析式，精确预测了声光偏转器对飞秒激光的光斑展宽，并揭示了光斑展宽的物理机制。

The wheels can be solid or comprised of a fixed stack of toothed disks, concentrically aligned, the teeth of each succeeding disk angularly offset in a common direction from the teeth of the next preceding disk to create a wheel having a plurality of uniform, elongated composite teeth around the circumference of the stack, the teeth being angled from the wheel's axis.

该轮可以是实心的或者由固定的堆叠的带齿盘片构成，它们共心地对齐，每个在后盘片的齿都与前一盘片的齿在角度上朝同一方向错开，以形成具有多个均匀、伸长的复合齿的轮，这些复合齿围绕堆叠盘片的边缘，并与轮的转轴成角度。

It can beasserted that the "Qing Hua" not only coloured the surrounding glazebut also preferably stained the anorthite crystalline at the site to deep blue.

证实釉下青花色料除了使周围的玻璃体着色外，更加择优地使该处的钙长石晶体染成深兰色。青花受热后钙长石回溶使兰色稍有扩散。

The GongBuCi have to describe according to the poem of DuFu behind with the structure and form of Ming Dynasty" grass shed view area" of recovering the reconstruction, re-appearing the pastoral appearance that poet so reside, constructing the thick thick poetry atmosphere;Have to set up in 1999 in flower arrangement park of" DuFu poem calligraphy wood-carved", display more than 100 DuFu's poem calligraphy wood-carved work, choose from the building hides several thousand in the pasts a hand book poem genuine calligraphy, engrave with the wood but, have to appreciate the value rather, its verse, calligraphy, have with the material, craft" four unique" it call;" big the hall" inside that locate the important male in a the third in building in thou in peaceful temple in original treasure , display the up to the present the large colored enamel of the local and biggest area(64 square meter) insets to whet to paint the mural with 12 in the pasts anthologist the person carves, image a development for displaying Du Fu usually with Chinese classic verse history;Building inside of basic display the 《 poem saint a thousand years 》, have the honor of acquiring the fifth" whole country ten big display the exhibition exquisite article" the best creativity prize.

工部祠后有依据杜诗描写和明代格局恢复重建的"茅屋景区"，重现了诗人故居的田园风貌，营造出浓厚的诗意氛围；在盆景园内有1999年建成的"杜诗书法木刻廊"，陈列着百余件杜诗书法木刻作品，是从馆藏数千件历代名人手书杜诗真迹中挑选出，用楠木镌刻而成，颇具观赏价值，其诗歌、书法、用材、工艺有"四绝"之称；位于原梵安寺古建筑群第三重大雄宝殿的"大雅堂"内，陈列着迄今为止国内最大面积（64平方米）的大型彩釉镶嵌磨漆壁画和12尊历代著名诗人雕塑，形象地展示了杜甫生平和中国古典诗歌的发展史；馆内的基本陈列《诗圣著千秋》，荣获了第五届"全国十大陈列展览精品"最佳创意奖。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。