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它具有     
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  it has
     It has been determined to be proteolytic enzyme,known as dipeptidyl peptidase IV(DPPIV).
     最初因发现它具有蛋白水解作用,故又称二肽肽酶IV(DPPIV)。
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     It has the extremely high promotion and the application value in multi-thread and the serial communication.
     在涉及多线程和串口通信方面都可以借鉴这项技术,它具有极高的推广和应用价值。
短句来源
     It has initiative of proportion control, forcing of negative proportion control、encouragement of pseudo-integral control and supervision of feedback control.
     它具有比例控制的主动性、负比例控制的强制性、伪积分控制的激励性和反馈控制的监控性的新型的智能3P控制。
     It has difference, connection, relativity and change.
     它具有差别性、联系性、相对性和变动性。
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     Gnutella is a kind of complete distributed, P2P network model without rank structure, it can fit the natural characteristic that the node frequently joins and leaves in P2P network . It has character of robusticity, real-time, dependability, and balanced load.
     Gnutella是一种完全的分布式、无等级结构的P2P网络模型,能够适应P2P网络中节点频繁加入和离开的自然特性,它具有健壮性、实时性、可靠性、负载平衡等优势。
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  it possesses
     It possesses characteristics of 3F,3I and 3S which are reflected in the development of CNC machine tools.
     它具有 3F ,3I和 3S的特征 ,并反映在数控机床的技术发展中。
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     Nonlinear Proportion-Integral-Differential (NLPID) control is a new type of control strategy, in which the non-linear tracking-differentiator and non-linear configuration are used to improve the performance of linear PID control, and it possesses the feature of not depending on the model of the controlled system.
     非线性比例–积分–微分(Nonlinear Proportion-Integral-Differential,NLPID)控制是一种利用非线性跟踪–微分器和非线性组合方法对线性 PID控制进行改进的新型控制策略,它具有不依赖于被控系统模型的特点。
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     It possesses 3 morphological features of the peripheral and interior couplings, i. e., the cytoplasmic gap in coupling region is about 11-18 nm in width;
     它具有周围偶联及内部偶联的形态结构特征,即(1)在偶联区域内存在胞浆间隙,宽约11~18nm;
短句来源
     It possesses electric shielding property and shielding ability for AC magnetic field more than 50 Hz.
     它具有电屏蔽作用,具有较好的抗电干扰能力. 对50Hz和50Hz以上频率的交流磁场亦有一定的屏蔽效果.
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     Generally, it possesses much stronger focusing ability than a single lens element under the same voltage ratio.
     通常它具有比单个透镜元素强得多的聚焦能力(在相同的电压比下)。 这种周期场透镜曾用于静电加速器离子源初聚系统中,但它的成象特性尚未有详细的分析。
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  it has a
     It has a lower temperature coefficient, voltage stabilization of 0.176mV/V and a ripple suppression ratio (SRP) of 60dB in simulation with PSPICE.
     经过PSPICE仿真,它具有0.176 mV/V的稳压系数和60 dB的纹波抑制比和较低温度系数。
短句来源
     1. For continuous map f on interval I = [0,1], if it has a n?
     1.对定义在单位闭区间 I = [0,1] 上的连续自映射 f, 若它具有一个n?
短句来源
     MT-Ⅲis different from known MT-Ⅰ/Ⅱ, it has a clear physiological effect, this kind of functional difference may come from its own unique structure.
     MT-Ⅲ与已知的MT-Ⅰ/Ⅱ不同,它具有明确的生理效应,这种功能上的差异可能来自于它自身的独特结构。
短句来源
     IL-15, after it's discovery by Grabstein in 1994, lot of research indicated it has a similar bioactivity with IL-2, both of them play a important role in inflammation.
     白细胞介素15自1994年由Grabstein等发现后,国内外的研究发现它具有与IL-2类似的生物活性,在炎症反应中具有多方面的作用,而其中的一个作用就是对嗜酸性粒细胞、淋巴细胞、肥大细胞等多种炎性细胞的凋亡抑制作用。
短句来源
     It has a bynamic measuring performance,closer to definition of wheel hardness and actual grinding condition.
     提出了以修整力作为评价砂轮硬度的新方法,它具有动态测量的特性,更接近砂轮硬度的定义,更接近磨削的实际情况。
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  it bears
     Knowledge economy is a kind of knowledge based economic formation, developed in the soil of industrial economy, and it bears a series of striking features of the times.
     知识经济是在工业经济土壤中生成的以知识为基础的经济形态 ,它具有一系列鲜明的时代特征。
短句来源
     In comparison with other differential micropressure sensors, it bears the features of high sensitivity, good stability and frequency signal output. It is widely used for the measurement of differential pressure and flow etc.
     和其它形式的微差压传感器比较,它具有灵敏度高,稳定性好,输出频率信号等特点,广泛用于差压、流量等参数测量。
短句来源
     It bears the characteristics of transcendence, naturalness and eternity.
     它具有超越性、自然性、永恒性等特征。
短句来源
     Smart Card is a plastic card with a microprocessor chip embedded in it, it's convenient to take, and it provides a larger data storage, what's more, it bears the ability of protecting internal data, namely, the protected data would not be accessed under unauthorized conditions.
     智能卡(SMART CARD)是一种嵌入了微处理器芯片的塑料卡,它便于携带,提供了较大的数据存储容量,更重要的是,它具有对内部数据的保护功能,即在未认证情况下,受保护的数据不会被非法访问。
短句来源
     and it bears a value to promote all-sided development of human.
     它具有一种促进人的全面发展的最终价值。
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      it has
    It has other applications, such as the possibility of defining a wavelet-like transform that maps integers to integers.
          
    Obviously every invariant subspace (under translation and modulation) is cyclic if it has a subspace WH frame.
          
    It is always in the Schwartz space; one can choose f so that it has all moments vanishing, or has compact support with arbitrarily many moments vanishing.
          
    It has potential to reduce physical skin penetration by injection and provide potentially effective vaccines.
          
    Pancreatic cancer is not only common, but also extremely difficult to treat, for which it has been called "the challenge of the twenty-first century".
          
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      it possesses
    It possesses physicochemical, spectral, and fluorescence properties of cytochrome b5 and EGFP indicating independent character of protein folding in frames of the chimera.
          
    It is proved that a normed space is a Hilbert space if it possesses the property: The geometric locus of the points, for which the ratio of the distances to two given points is constant, is a sphere.
          
    In addition to its main AP endonuclease activity, that incises DNA 5' to the AP-site, it possesses other weak enzymatic activities.
          
    It possesses the Wells point symbol (44(412612)(412)2 and has the Wellsean Schl?fli index (4.4615, 6).
          
    It possesses features that are observed for HTSC, such as a high superconducting transition temperature,
          
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      it has a
    Obviously every invariant subspace (under translation and modulation) is cyclic if it has a subspace WH frame.
          
    The IR measurement indicates that there is a strong interaction between the PANI and TiO2 nanoparticles, and it has a beneficial effect on the thermal stability of the composite nanofiber.
          
    Sequence analysis revealed that it has a length of 438 nt, which encodes a 146-amino acid peptide.
          
    At present, it has a well-balanced research team of over 200 persons, and the research interests have extended to language processing, machine translation, text retrieval and other fields.
          
    It was shown that the restriction endonuclease Asi256I is a true isoschizomer of MboI, it has a temperature optimum of 6°C, and can be used in molecular-biological and genetic-engineering studies performed at low temperatures.
          
    更多          
      it bears
    It bears noticing, however, that this paper is only concerned with the views of the jurists of the four major Sunni schools.
          
    Apart from this character, it bears much resemblance to A.
          
    It bears a close resemblance to the Armenian story about Artawazd, a mythical hero from the same Prometheus cycle, attested in Xorenac'i and in the later Armenian tradition.
          
    Atrial fibrillation (AF) is the most common sustained arrhythmia in patients with hypertrophic cardiomyopathy (HCM), and it bears numerous pathophysiologic consequences that potentially affect patient outcome and symptoms.
          
    I review recent progress and developments in parity-violating electron scattering as it bears on three topics: strange quarks and hadron structure, electroweak radiative corrections, and physics beyond the Standard Model.
          
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    A simplified method for computing the end moments and thrusts in continuous arches is presented in this paper. This is a modified successivecorrection method, and is superior to the usual methods in the following two respects: (1) the distributions of moments and thrusts are independent of each other; (2) the distributions are carried at the tops of piers instead of the so called "neutral points", and the procedure is first to balance the unbalanced moments and thrusts of the joints in a very simple manner without...

    A simplified method for computing the end moments and thrusts in continuous arches is presented in this paper. This is a modified successivecorrection method, and is superior to the usual methods in the following two respects: (1) the distributions of moments and thrusts are independent of each other; (2) the distributions are carried at the tops of piers instead of the so called "neutral points", and the procedure is first to balance the unbalanced moments and thrusts of the joints in a very simple manner without any relation to individual members, and after few cycles of operation, we add the results and obtain the total unbalanced moments and thrusts of the joints, from these quantities the end moments and end thrusts of individual members can be obtained at once by formulas. The speed of convergence is rapid and the required work of computation is greatly reduced especially for multiplespan continuous arches.

    本文提出一種連續拱的新分析法,這是一種經過處理後的逐次校正方法,它具有下列幾個特點:(1)撓矩與推力之分配各不相涉;(2)分配工作仍在墩頂進行,並將連接於墩頂之各構件間的關係隔開,因而使收斂速度增加,計算工作得大形簡化。為說明簡明起見,本文先就各拱相同和各墩相同的情形出發,但其原則完全可應用到一般性的情况上去。

    Experiments were conducted in 1955—1957 to determine the merits of the use of gravel as a soil mulch material instead of a mixture of sand and gravel widely used in Kansu.The results showed that(1)the effect of the gravel mulch on the soil temperature was as favorable as that of the sand-gravel mulch,(2) the gravel mulch was more effective in retaining soil moisture and(3)the growth and yield of the wheat grown on gravel mulched soil were slightly higher than those on sand-gravel mulched soil. The possibility...

    Experiments were conducted in 1955—1957 to determine the merits of the use of gravel as a soil mulch material instead of a mixture of sand and gravel widely used in Kansu.The results showed that(1)the effect of the gravel mulch on the soil temperature was as favorable as that of the sand-gravel mulch,(2) the gravel mulch was more effective in retaining soil moisture and(3)the growth and yield of the wheat grown on gravel mulched soil were slightly higher than those on sand-gravel mulched soil. The possibility of lengthening the effective period of the gravel mulch and of operating of farm machineries in gravel mulched fields is discussed.

    甘肃砂田在战胜干旱与保证作物高额而稳定的产量方面具有特殊功效。但是它也具有寿命短促与机械化困难等两个严重的缺点。这两个缺点产生的基本原因在于耕作过程中砂石容易和土壤混合之故。为了改进这种缺点,我们提出用直径5毫米以上的砾石来代替砂石混合物作为土壤覆盖层。根据三年来的试验结果,证明:(1)纯砾石层覆盖下的土壤温度并不低于砂石混合层(见表1);(2)纯砾石层的保存土壤水分的作用大于砂石混合层,这主要由于在纯砾石层覆盖之下,土壤水分的蒸发率小,而雨水的渗漏速度大之故(见表2和表3);(3)利用纯砾石层代替砂石混合层对于作物的生长与产量并无不利的影响。对于利用这种改良方法能够延长砂田使用年限与进行机械化耕作的可能性也加以讨论。

    A method for the preparation of p-nitroacetophenone was developed on the principle of auto-oxidation of p-nitroethylbenzene. The product could be isolated in good quality by a process of simple freezing, Manganese acetate on calcium carbonate (1:10) was found to be the catalyst of choice. When a steady current of oxygen was bubbled through p-nitroethylbenzene at the rate of 0.55 ml. per minute for every gram of the mass, with stirring, at 140-145℃, and in the presence of catalyst equivalent to 0.005 to 0.01%...

    A method for the preparation of p-nitroacetophenone was developed on the principle of auto-oxidation of p-nitroethylbenzene. The product could be isolated in good quality by a process of simple freezing, Manganese acetate on calcium carbonate (1:10) was found to be the catalyst of choice. When a steady current of oxygen was bubbled through p-nitroethylbenzene at the rate of 0.55 ml. per minute for every gram of the mass, with stirring, at 140-145℃, and in the presence of catalyst equivalent to 0.005 to 0.01% by weight of Mn~(++), p-nitroacetophenone content could be raised to a maximum of 62% within 18 to 30 hours. p-Nitrobenzoic acid and formic acid were also formed alongside with p-nitroacetophenone in an amount approximately 10% its weight, together with probably a trace of nitrophenols which was not identified. From 453 g. of p-nitroethylbenzene, after oxygenation and being chilled, the crude product separated and washed with a solution of sodium carbonate at 70-80℃ to remove p-nitrobenzoic acid, 153-161 g. of p-nitroacetophenone was obtained, m. p. 79-80℃. Unchanged p-nitroethylbenzene could be reclaimed from the mother liquor by fractionation. The role of calcium carbonate in the catalyst is, however, not only that of a neutral carrier. It was shown to exert an important moderating effect on the decomposition of the peroxide radical which was essential for the maintainance of auto-oxidation reaction chain. When manganese acetate alone was used as catalyst, the reaction was usually rapid at the onset but of short duration. "Besides, the reaction would then be very sensitive to the presence of even minute amounts of copper and iron salts which were both potent peroxide destroyers. The presence of calcium carbonate would bring to a check these deleterious effects, giving reaction liquor of light colour and high phenone content. An un-identified inhibitor was found to be formed and accumulated during the reaction.

    發展了自对硝基乙苯經自动氧化以制取对硝基苯乙酮方法。产品可用冷冻法析出。最好的接触剂为附着于碳酸鈣上的醋酸錳(10:1).在攪拌下向对硝基乙苯中通氧,速度为每克每分鐘0.55ml.,温度140~145°C,接触剂用量相当于0.005~0.01%Mn~(++),在18至30小时內对硝基苯乙酮含量可达62%。接触剂中的碳酸鈣的作用,並非一單純的不活潑性載体。我們証明了:它具有延緩过氧化物分解的重要作用,而过氧化物的存在,对于自动氧化反应链锁的得以持续是必要的。它也能抵消可能存在于原料中的微量銅鹽和铁鹽对过氧化物的强力破坏作用,以得到酮含量高、色澤淺的产物。此外尚發現在反应过程中有一种未經証实的抑制物生成並积累。

     
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