根出的

In one corner was a stagnant pool of water, surrounding an islandof muck; there were several half-drowned fowls crowded together under a cart,among which was a miserable, crest-fallen cock, drenched out of all life andspirit; his drooping tail matted, as it were, into a single feather, alongwhich the water trickled from his back; near the cart was a half-dozing cow,chewing her cud, and standing patiently to be rained on, with wreaths of vaporrising from her reeking hide; a wall-eyed horse, tired of the loneliness of thestable, was poking his spectral head out of a window, with the rain dripping onit from the eaves; an unhappy cur, chained to a dog-house hard by, utteredsomething every now and then between a bark and a yelp; a drab of a kitchenwench tramped backwards and forwards through the yard in patterns, looking assulky as the weather itself; everything, in short, was comfortless and forlorn,excepting a crew of hardened ducks, assembled like boon companions round apuddle and making a riotous noise over their liquor.

在院子的一角，一潭污水围着孤岛似的粪堆；几只几乎被雨水淋透的鸡簇拥在一辆马车底下，其中一只可怜的公鸡，倒垂着鸡冠，被淋得没精打彩，毫无生气；它那聋拉着的尾巴粘结在一起，仿佛只成了一根羽毛，雨水顺着它从背脊往下直淌；离马车不远处，有一头睡眼惺松的奶牛，嘴里喂着反刍的食物，默默地站在那里，任凭雨水打在身上，湿淋淋的背上冒出缭绕的水气；一匹眼珠小而眼白特大的马厌倦了马厩里的寂寞，把它那幽灵似的脑袋从窗口探了出来，屋檐上的雨水滴沥滴沥地落在它头上；一只不幸的杂种狗被链条拴在近旁的狗窝里，时时发出似吠似嗥的声音；一个邋遢厨娘拖着木屐，迈着沉重的步于在院子里进进出出，她那郁郁不乐的神色，就像阴沉的天气一样；总之，除了一群饱经风雨的鸭子，像饮酒作乐的朋友那样聚集在污水潭的四周戏水而外，这儿的一切都令人感到凄凉和沮丧。

In one corner was a stagnant pool of water, surrounding an island of muck; there were several half-drowned fowls crowded together under a cart, among which was miserable, crest-fallen cock, drenched out of all life and spirit; his drooping tail matted, as it were, into a single feather, along which the water trickled from his back; near the cart was a half-dozing cow, chewing her cud, and standing patiently to be rained on, with wreaths of vapor rising from her reeking hide; a wall-eyed horse, tired of the loneliness of the stable, was poking his spectral head out of a window, with the rain dripping on it from the eaves; an unhappy cur, chained to a dog-house hard by, uttered something every now and then between a bark and a yelp; a drab of a kitchen wench tramped backwards and forwards through the yard in patterns, looking as sulky as the weather itself; everything, in short, was comfortless and forlorn, excepting a crew of hardened ducks, assembled like boon companions round a puddle and making a riotous noise over their liquor. By Washington Irving

在院子的一角，一潭污水围着孤岛似的粪堆；几只几乎被雨水淋透的鸡簇拥在一辆马车底下，其中一只可怜的公鸡，倒垂着鸡冠，被淋得没精打采，毫无生气；它那耷拉着的尾巴粘结在一起，仿佛只成了一根羽毛，雨水顺着它从背脊往下直淌；离马车不远处，有一头睡眼惺忪的奶牛，嘴里嚼着反刍的食物，默默地站在那里，任凭雨水打在身上，湿淋淋的背上冒出缭绕的水气；一匹眼珠小而眼白特大的马厌倦了马厩里的寂寞，把它那幽灵似的脑袋从窗口探了出来，屋檐上的雨水滴沥滴沥地落在它头上；一只不幸的杂种狗被链条拴在近旁的狗窝里，时时发出似吠似嗥的声音；一个邋遢厨娘拖着木屐，迈着沉重的步子在院子里进进出出，她那郁郁不乐的神色，就象阴沉的天气一样；总之，除了一群饱经风雨的鸭子，象饮酒作乐的朋友那样聚集在污水潭的四周呷呷嬉水而外，这儿的一切都令人感到凄凉和沮丧。

In one corner was a stagnant pool of water, surrounding an island of muck; there were several half-drowned fowls crowded together under a cart, among which was a miserable, crest-fallen cock, drenched out of all life and spirit; his drooping tail matted, as it were, into a single feather, along which the water trickled from his back; near the cart was a half-dozing cow, chewing her cud, and standing patiently to be rained on, with wreaths of vapor rising from her reeking hide; a wall-eyed horse, tired of the loneliness of the stable, was poking his spectral head out of a window, with the rain dripping on it from the eaves; an unhappy cur, chained to a dog-house hard by, uttered something every now and then between a bark and a yelp; a drab of a kitchen wench tramped backwards and forwards through the yard in patterns, looking as sulky as the weather itself; everything, in short, was comfortless and forlorn, excepting a crew of hardened ducks, assembled like boon companions round a puddle and making a riotous noise over their liquor.

在院子的一角，一潭污水围着孤岛似的粪堆；几只几乎被雨水淋透的鸡簇拥在一辆马车底下，其中一只可怜的公鸡，倒垂着鸡冠，被淋得没精打彩，毫无生气；它那聋拉着的尾巴粘结在一起，仿佛只成了一根羽毛，雨水顺着它从背脊往下直淌；离马车不远处，有一头睡眼惺松的奶牛，嘴里喂着反刍的食物，默默地站在那里，任凭雨水打在身上，湿淋淋的背上冒出缭绕的水气；一匹眼珠小而眼白特大的马厌倦了马厩里的寂寞，把它那幽灵似的脑袋从窗口探了出来，屋檐上的雨水滴沥滴沥地落在它头上；一只不幸的杂种狗被链条拴在近旁的狗窝里，时时发出似吠似嗥的声音；一个邋遢厨娘拖着木屐，迈着沉重的步于在院子里进进出出，她那郁郁不乐的神色，就像阴沉的天气一样；总之，除了一群饱经风雨的鸭子，像饮酒作乐的朋友那样聚集在污水潭的四周戏水而外，这儿的一切都令人感到凄凉和沮丧。

To solve the exsisting problems in the realization of the LFM/CW radar, the thesis presents a technique for dynamically measuring the LFM/CW signals, which can accomplish the dynamic measurements of FM linearity, FM bandwidth and FM slop of the transmitted signals of LFM/CW radars. This technique creates an effective and accurate means of judging the performance of LFMCW radars. The linearity-correction techniques presented in the thesis successfully make the linearity of the transmitted signals of an actual LFM/CW radar reduce from approximately 25% to 0. 1%(or r. m. s linearity of 0.04%), better than the best results (0.22%) obtained by foreign researchers with complex linearization closed-loop in the same kind of LFM/CW radars, according to the published literatures during the last decade. In order to improve the capability of the real-time processing and range-cells management of LFM/CW radars, the principle of equivalent mixing by lacking-sampling process of band-pass real signals is proposed based on the well-proved improvedversion of sampling theorem of band-pass real signals. This principle is used to configure the range-segments processing of the beat signals of an actual LFM/CW radar. The techniques of system-background interference suppression and the beat signal's dynamic range suppression are proposed, and are realized in an actual LFM/CW radar to demonstrate their effectiveness.

针对线性调频连续波雷达实现中急待解决的技术问题，文中提出并验证了线性调频连续波信号的综合动态测试技术，可以完成对线性调频连续波雷达发射信号的扫频线性度、扫频带宽和扫频斜率的综合动态测试，为衡量实际线性调频连续波雷达的系统性能创立了精确有效的测试手段；文中建立的非实时闭环动态校正技术使一部实际的线性调频连续波雷达的发射信号（时带积3×10〓）的扫频线性度从25%改善为0.1%（方均根线性度0.04%），优于国外已公布的80年代同类雷达中采用复杂的实时闭环动态校正环路所获得的实际结果（0.22%）；为了改善线性调频连续波雷达的实时性和分辨单元数处理能力，文中发展完善了实带通信号的采样定理并给予了严格证明，并在此基础上提出了欠采样等效混频原理，将其应用于实际线性调频连续波雷达的距离分段处理中；针对线性调频连续波雷达中系统背景干扰和回波动态范围问题，创立了系统背景综合抑制技术和频域动态范围压缩技术，并将它应用于实孔线性调频连续波雷达系统中，显示出它们的有效性。

In the experiment of measuring the basic electric charge by using Millikan method,the selection of oil drop should satisfy the principles of which fall time is within 20 minutes and charged amounts of oil drop are less than five.

在密立根法测量基本电荷电量的实验中，油滴选取应满足下降时间在20秒左右，油滴的带电荷数要少于5个的原则，本文在理论上分析了油滴选取原则的依据，给出了在油滴的下落时间和平衡电压的坐标系中等电荷数的多重曲线，为选择合适的油滴提供了理论上的判断依据。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。