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It was shown that the stable carbon isotope composition of beef tissue was primarily dependent on the diet the animals were fed,meanwhile theδ~(13)C values of cattle tail hair, defatted muscle and crude fat all enhanced with the increment of the proportions of C4 constituents in diet, but those values were on the contrary with the enhancement of the proportions of C3 constituents. Moreover, allδ~(13)C values of different tissues were significantly correlated with the content of C4 and C3 plant material. So, the main component of cattle feed could be investigated with the help ofδ~(13)C values. Theδ~(15)N values of beef tissues were affected by feed composition to some extent, but it had no regularity. The cattle tail hair and defatted muscle enriched in 13C to their feeds gave different results between the two groups, but cattle tail hair enriched in 15N much more than defatted muscle and in the proportion of 3‰- 5‰, plus, cattle variety and individual had effect on the proportion of enrichment.

结果表明，牛组织中碳同位素组成主要受饲料的影响，牛尾毛、脱脂肌肉、粗脂肪中的δ~(13)C值随着C4植物含量在牛饲料中的比例增加而升高，随着C3植物含量在牛饲料中的比例增大而降低，并且均与C4、C3植物含量呈极显著的相关性(P.01)，用牛组织中的δ~(13)C值可以调查牛饲料中的主要成分；牛组织中的氮同位素一定程度上受饲料因素的影响，但未随饲料组成成分的改变而呈现规律性变化；牛尾毛、脱脂肌肉相对饲料对13C的富集比例两组试验结果不一致，牛尾毛对15N的富集比例大于脱脂肌肉，富集比例约在3‰- 5‰，饲料种类、牛个体等因素对富集比例均有一定影响；牛尾毛、脱脂肌肉、粗脂肪中的δ~(13)C值三者之间相关性达到极显著水平(P.01)。

Through above study, the theoretical analysis of the inherent fault tolerance of feed-forward neural networks has been extended from hard-limit activation functions to differentiable activation functions; 2. By using above method, fault tolerance of discrete Hopfield feedback neural networks have been also analyzed. It means that the above method can be applied not only for feed-forward neural networks but also for feedback neural networks; 3. For the feed-forward neural network with the Sigmoid activation function, Chebyshev Inequality method was presented.

这项研究将以前仅限于对硬限幅作用函数前向神经网络固有容错性能的理论分析推广到具有可微作用函数的前向神经网络； 2 针对离散型Hopfield反馈神经网络，利用上面提出的方法，对其同样进行了容错性分析，得出许多有用的结论和计算公式，说明上面提出的方法不仅适用于前向神经网络，同时也适用于反馈神经网络； 3 针对具有Sigmoid作用函数的前向神经网络提出了一种切比雪夫不等式法。

Connected with trail research, this paper discusses synthetically the lacks of head-feed rice-wheat combine harvester and its' advancements on technology, and the current of the development on technology of head-feed combine harvester made in Japan in such as the header, the conveying-feed unit, the threshing cylinder, the cleaning unit and the rubber crower w...

分析了日本半喂入稻麦联合收割机在使用中存在的不足以及在收割、输送、脱粒、清选和行走机构等方面技术改进和发展动向。研究表明，以上技术进步进一步提高了半喂入联合收割机技术性能，可为我国半喂入联合收割机的研制提供借鉴。

The invention relates to biological feed, in particular to biological feed produced with kitchen waste and filter mud of sugar-refinery, and belongs to novel renewable biological feed and a production method in the resource environmental field. The components adopt kitchen waste and filter mud of sugar-refinery (calcium carbonate content of more than 75 percent to 85 percent) as the raw material.

本发明涉及一种生物饲料，特别是利用餐厨废弃物和糖厂滤泥生产的生物饲料，属于资源环境领域的一种新的再生生物的饲料及其生产方法，其组分选用餐厨废弃物、糖厂滤泥(碳酸钙含量75％～85％以上)为原料。

The spider resembles a pet, if you use same meal basin to feed it everyday, it was used to use this meal tub , with respect to the gallinaceous duck that like me native place raises, want my mom to knock them to often eat the salver that feed only, they are much older far metropolis runs to eat feed.

蜘蛛就像一个宠物，如果你每天都用同样的饭盆喂它，它就习惯了使用这个饭盆，就像我老家养的鸡鸭，只要我妈妈一敲它们经常吃食的盆子，它们多老远都会跑来吃食。

The design of the device using NC Lathe CA6240 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with.

本设计利用数控装置对CA6240普通车床进行控制，主传动系统部分采用交流调频主轴电动机经带轮及分级齿轮变速箱驱动主轴，通过变频器和齿轮变速箱实现分段无级变速；进给系统采用步进电机通过减速后驱动滚珠丝杠运动，在纵向进给系统中通过一级齿轮减速后驱动滚珠丝杠，在横向进给系统中通过二级齿轮减速驱动滚珠丝杠；刀架改为自动转位刀架从而实现自动换刀；通过MCS-51系列8051单片机对数据进行计算处理，由I/O接口输出步进脉冲信号控制进给速度和行程；为了保持切削螺纹的功能，要在主轴外端或其它适当部位装上脉冲发生器；将车床的手动尾座改造成为可控电动尾座。

With the development of industrial technology, the type of stamping parts, the complex process of production requirements, as well as user-friendly, hand-feed the press because of the existence of production efficiency, speed, accuracy, security and other aspects of a range of issues, pressing the manual feed production has gradually shifted from automatically replaced by feed mechanism.

随着工业技术的发展，冲压制件类型、工艺的复杂化以及人性化生产要求，手工送料的冲压加工生产由于存在着效率、速度、精度、安全等方面的一系列问题，冲压生产的手工送料已逐步由自动送料机构所取代。

As a result, for feed-forward NN model this paper first proposes the concepts of"attractor"and"attraction region","fake attractor"and"fake attraction region", and norm of describing"attraction region". Further this paper presents a mathematics method of calculating feed-forward NN"attraction region", it solves the overelaborate job of checking NN fault-tolerance performance by testing all detecting samples, so to test fault-tolerance performance using theoretic characteristic norm is an important break. In accordance with feed-forward NN low fault-tolerance and difficult to satisfy practical application, according to practical application theory, this paper presents an actual method of enhancing NN fault-tolerance performance, builds the mechanism of reconstructing NN model based on combining NN and fuzzy process, reforms NN "fake attractor"and"fake attraction region"to enhance NN fault-tolerance performance greatly.

为此，本文首先给出了前馈NN模型的&吸引子&和&吸引域&，&伪吸引子&和&伪吸引域&的定义，以及描述吸引域的指标，在此基础上提出了一种计算前馈NN模型&吸引域&大小的数学计算方法，该方法提出解决了目前依靠对检测样本的测试工作来检验NN容错性的繁琐工作，而用具理论意义的性能指标来检验，这是一个重要的突破；针对前馈NN容错性较低以致难于满足实用的缺点，根据NN实用稳定性理论，提出了一种提高其容错性的实用方法，建立了基于NN与模糊处理相结合的NN模型重构机制，重构NN&伪吸引子&和&伪吸引域&来大大地提高NN的容错性。

The results show that the variation of diameter of ATF yarn increases with increasing the over feed of peel filament, but the variation of average diameter decreases. When the polyester FDY is used as core filament, the structure of diacetate composite ATF is looser than the ATF with capron as core filament, and the unevenness of yarn core and outside are also greater. The ATF loops or hairiness mainly centre at the height 0.5 and 1.0 mm, the amount decreasing with the height increasing, with exponential distribution. When the over feed of peel filament enhances, the number of loops or hairiness decreases at the height of 0.5 mm, while other height of loops or hairiness increases.

结果显示：空变丝纱芯直径的变异随皮丝超喂提高而增加，但平均直径的变异却呈下降趋势；以涤纶FDY做芯丝时，二醋酯长丝复合空变丝的结构较芯丝为锦纶的空变丝松散，纱芯和外围不匀程度也相对较大；空变丝丝圈丝弧或毛羽主要集中在高度为0.5mm和1.0mm的位置，其个数随高度的增加而不断减少，基本呈指数分布；皮丝超喂提高时，0.5mm高度的丝圈丝弧或毛羽个数减少，其他高度的丝圈丝弧或毛羽个数则增加。

I developed bee protein feed high in protein, fats, minerals, fat soluble vitamins, the proportion of suitable water-soluble vitamins, feed ratio of computational science, in line with bee nutritional requirements; feed is also appropriate to add grape oxidase, amylase, invertase, protein hydrolytic enzymes, fat bees enzymes necessary enzymes, raising bees on nutrient absorption rate, while reducing excretion, so that more fully reflects the use of nutrition.

我开发蜂蛋白饲料高蛋白质，脂肪，矿物质，脂肪和水的比例适当的水溶性维生素，饲料比例的计算科学，与蜜蜂营养要求，饲料也应加重葡萄氧化酶，淀粉酶脂溶性维生素，蔗糖酶，蛋白水解酶，脂肪酶的必要蜜蜂酶，提高对养分的吸收率蜜蜂，同时减少排泄，因此更充分地反映了营养的使用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。