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The design of four-mirror anastigmat was analyzed, then a system with effective focal length of 1 200 mm and field of view of 0.8°×0.8° was designed , total length and f-number are 300 mm and F/6,respectively.The system has advantages of long focal length, relative short physical size and excellent ability in restraining stray lights.

分析了离轴四反的设计步骤，设计了一个焦距为1 200 mm，视场为0.8°×0.8°，相对孔径为F/6的光学系统，系统总长只有300 mm，并达到很好的光学性能，具有长焦距、小尺寸、良好的杂散光抑制能力等特点。

As the track space increasing, the holding power which flexible holding parts act on sugarcane is dropping off. As the canvas layers and length of flexible holding part increasing, the track space is also increased when flexible holding parts act on sugarcane same holding power. As the length of flexible holding part increasing, the rate of slope of holding power following the track space to change would be decreased, so holding power would vary slowly. The holding power has a better linear relationship with the track space. Holding sugarcane stalk on knot or not on knot, sugarcane stalk having leaves or without leaves, the holding power would have not significant difference. Considering the structure of device and stress of sugarcane, 4-layers canvas conveyer belt was used as flexible holding part, while its length is 120mm, 160mm, or 200mm, the corresponding maximum track space is 135mm, 183mm, or 235mm. Experimental investigation of sugarcane windrowing was done on the arc-track-type flexible holding and conveying test mechanism.

随着轨道间距的增大，柔性夹持元件施加给甘蔗的夹持力逐渐减少；施加给甘蔗相同的夹持力，随着柔性夹持元件帆布帘层数和长度的增加，对应的轨道间距增加；随着柔性夹持元件长度的增大，柔性夹持元件施加给甘蔗的夹持力随轨道间距变化的斜率减小，夹持力大小的变化越缓慢；柔性夹持元件提供的夹持力与轨道间距均呈线性关系；柔性夹持元件夹在甘蔗节上还是不夹在节上，甘蔗有叶还是无叶，其施加给甘蔗的夹持力无显著差异；从夹持输送装置结构以及甘蔗的受力情况来考虑，选择4层帆布帘输送带作为柔性夹持元件更能平稳、柔和地夹持输送甘蔗，4层帆布帘120mm、160mm、200mm长的柔性夹持元件夹持甘蔗所需最大轨道间距为135mm 、183mm、235mm。

The hybrids of CY×WP was found to show the highest heterosis ratewith a range of values from 2.28% to 18.20% on the four growth traits of body length,body weight, cephalothorax length and abdominal length, while the hybrids ofCY×HB and WP×CY showed the poor heterosis among the six hybridizationcombinations.

研究结果表明，在生长性状上，CY×WP组合的子一代无论在形态性状(体长、头胸甲长、腹节长)还是体重均较其它组合表现出最大的杂种优势(2.28％～18.20％)，而CY×HB和WP×CY组合子一代的各生长性状表现出杂交劣势。

The use of footscan balance test system of national high-level pistol, rifle shooters had a balance of stability tests, by analyzing the following major conclusions: First, all the athletes in men's pistol shooting athletes body posture and adjusting the balance of stability the capacity of the worst; the second, firing only state body sway eyes open area and before and after the shaking smaller decrease; and thirdly, the general balance of the stability of indicators (both before and after the body center of gravity, around shaking rate, trajectory length, shaking the area) can not accurately reflect the high level of shooting athletes balance the characteristics of stability, and derived indicators - per unit area of the track length (the total length of track and shaking the area ratio), both show the balance of stability, but also reflect the attitude adjustment ability, in the sway area certain circumstances, the greater its value, indicating that ability to regulate the more intense the frequency of shaking sooner, the better the stability of physical balance, in the actual shooting of firearms at the time of the impact of the smaller, can be used as shooting athletes evaluation and selection of indicators.

运用footscan balance测试系统对国家高水平手枪、步枪射击运动员进行了平衡稳定性的测试，通过分析得出以下主要结论：第一，所有射击运动员中男子手枪运动员身体姿态的平衡稳定性及调节能力最差；第二，射击训练只能使睁眼状态下身体晃动面积和前后晃动幅度减小；第三，一般平衡稳定性指标(身体重心前后、左右晃动幅度、轨迹长度、晃动面积)不能准确地反映高水平射击运动员平衡稳定性的特点，而派生指标——单位面积的轨迹长度(轨迹总长度与晃动面积的比值)，既显示平衡稳定性，又能体现姿态调节能力，在晃动面积一定的情况下，其值越大，表明调节能力越强，晃动的频率越快，身体平衡稳定性越好，在实射时对枪支的影响越小，可作为射击运动员的评价和选材指标。

The desirable long proportion is not derived from a long back, but from overall length with relation to height, which is achieved by length of forequarter and length of withers and hindquarter, viewed from the side.

身躯坚固而非细长，不论在休息时还是在运动中，给人的印象都是肌肉发达、敏捷，既不显得笨拙，也不显得软弱。

Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.

利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度；对18年中植被生长季的开始、结束时间和长度进行一次线性拟合，分析了植被生长季的开始、结束日期和长度的线性变化趋势；基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度，并对这两种方法的监测结果作了比较，从而得到了较好的不同纬度区域1982～1999年植被生长季的变化趋势；基于曲线拟合了1982～1999年的不同空间位置的植被物候期，然后讨论了每年和多年平均的植被生长季的空间分异规律；最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系，不同纬度带的植被物候期与气候变化的相互关系，植被物候期与气候变化空间相互关系。

Its decompression architecture requires only a finite state machine and a cyclical scan register whose length is the same as that of the data block. Compared to the length of the cyclical scan register required in Golomb and FDR codes, which is equal to the length of the test vector, hardware cost in the proposed method is less than that in Golomb and FDR codes.

测试源划分技术是解决这一问题的主要方法，它是将ATE中的部分测试功能转移到被测试的芯片上，芯片之外主要建立一个经过变换的测试数据存储源，以减少测试数据的传输，同时在芯片上又不需要花费太多的硬件执行数据变换，实现测试模式的生成。

The result of sequence analysis indicated that the length of cDNA and DNA fragments of Lectin gene and the length of cDNA and DNA fragments of Pectate Lyase gene were 508 bp,575 bp,1,316 bp and 1,858 bp respectively.The DNA fragment of Lectin gene had a intron,whose length was 67 bp .The DNA fragment of Pectate Lyase gene had 3 introns,whose lengths were 90 bp,83 bp,and 370 bp respectively. All these four introns sequences followed the rule of GT-AG.

通过序列分析得知，香蕉凝集素基因cDNA片段长508 bp；香蕉凝集素基因DNA片段长575bp，有一个长为67bp的内含子；香蕉果胶裂解酶基因cDNA片段长1，316bp；香蕉果胶裂解酶基因DNA片段长1，858bp，有三个内含子区，分别长90 bp，83 bp和370bp；在总共的四个内含子序列中，分别都符合GT-AG规则。

The full-length cDNAs of rice and wheat S-adenosylmethionine decarboxylase gene were isolated and characterized. The rice SAMDC cDNA is 1560 bp in length, encoding a polypeptide of 398 amino acids, and the wheat SAMDC cDNA is 1351 bp in length, encoding a polypeptide of 392 amino acids. Both the rice and wheat SAMDC proteins contain the conserved proenzyme cleavage site and the PEST domains, which are commonly found in the SAMDC protein sequences of all eukaryotes.

克隆了水稻和小麦SAMDC基因的全长cDNA序列，所获得的水稻SAMDC基因序列长1560 bp，编码一个由398个氨基酸组成的多肽，小麦SAMDC基因序列长1351 bp，编码一个由392个氨基酸组成的多肽，二者均含有真核生物SAMDC蛋白所拥有的两个保守的氨基酸结构域：酶原剪切位点和PEST结构域。

Although our experiment dealt with the more suavity imperative sentence, the duration of these sentences is still confidently shorter that of statement sentence and question sentence When comparing the nucleus of all three types of sentences, in each type of sentence, the length of the nucleus is always the longest of the five syllables, making up about 30% of the total length for each sentence When comparing the auxiliary word at the end of the sentences, question auxiliary word"了"has a longer length than"吧/了"in imperative sentence, and"了"in statement sentence From this, we can draw a conclusion in Chinese, the duration of the syllable that appears at the end of sentence, is very much related to the type of sentence it is

从句子全长的对比看，祈使句的全长要比陈述句和疑问句短。虽然我们的实验语句属于口气比较委婉的祈使句，而这种祈使句的时长还是比陈述和疑问句大大缩短。三种句型的调核比较看，祈使句、陈述句和疑问句的调核音长在每个句型的5个音节中最长，占句子全长的大约百分之三十左右。从句末助词对比看，疑问句末助词"了"的音长跟祈使句"吧/了"和陈述句"了"的音长相比明显加长了。由此可见，在汉语中句末音节的时长与句型有密切相关，祈使句句末的语气助词的音长是属于短的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。