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It indicates the existance of a choice mechanism, by which the pregnant mother keeps extraembryonic tissue ( placenta) to express X chromosome of the same origin in the interface between the tissues of mater-nal and embryo.

胎-母组织介面上的胚外组织只表达与母体同源的X染色体。

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After processed by narrow band com-plex filtering or narrow band recurrence filtering and Hilbert trans-formation, real signal is transformed into narrow band complex sig-nal, whose instantaneous spectrum is then used to solve for tensor impedance element.

本文通过对记录上的实信号做窄带复数滤波或窄带递归滤波和希尔伯特变换，转换成窄带复信号，再由复信号的瞬时谱求出张量阻抗元素。

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NAL unIt'stream: A sequence of NAL units.

NAL单元流: NAL单元组成的序列.

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Conclution: laser therapy has been an simple, safe, reliable treatment of a-nal disease with fiber conducted Ho: YAG laser and Nd: YAG laser and with no complication, especially for the deep lesions in lower rectum through anoscope.

肛门镜下光纤传导的Ho：YAG激光、Nd：YAG激光使肛管、直肠下端位置较深病损的治疗直观有效，值得推广。

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AIM: To study the relationship between the anti-arrhythmia action of naloxone ( Nal) and its effect on baroreflex sensitivity ( BRS).

目的研究纳洛酮（Nal）抗心律失常作用与其对压力反射敏感性（BRS）影响的关系。

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Using luminescent powder based SrO. nAl 2O 3: Eu+ 2 as the luminant material, a new kind of luminescent enamel signboard with long afterglow time, high starting brilliance and no-radioactivity has been prepared.

利用铕激活的铝酸锶（SrO.nAl2O3：Eu＋2）发光材料，研制了一种余辉时间长、发光起始亮度高、无放射性危害的发光搪瓷标牌。

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Methods After epluchage with tianqi powder vaseline gauze and cephalosporin for exter-nal application.

方法田七粉凡士林加先锋铋外敷.

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The enhancing immune function of MT was completely or incompletely held back by NAL, RESP, PHE and PROP.

NAL、RESP、PHE及PROP能完全或部分阻断MT的免疫增强作用。

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This provoked negative comments from a senior architect in a team-inter ­ nal technical quality assurance review.

这在部门内部技术质量评估审核会上，这一做法引起了高级架构师的批判。

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AIM: To study the alteration of the content of guanine nucleotide binding protein α subunits ( G α protein) in myocardium during shock, and the effect of naloxone ( NAL) on the G protein.

目的：研究失血致低血容量性休克大鼠心脏组织鸟苷酸结合蛋白（Guanine nucleotide-binding protein，G蛋白）含量的变化及纳络酮对其影响。

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Abstract Some historians attribute Julian's pagan policy to his fierce per so nal faith.

[摘要]以往一些历史学家的著作中,拜占廷帝国皇帝朱利安在其统治时实行的尊崇多神教政策更多的归因于他的个人信仰,他也因此被冠以“背教者 ” 之名.

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The ker-nal of SE is a syntax-directed editor based on the object-oriented concepts. One of the key issue in the design of SE is how to represent the elements of a target language by means of the class concepts internally.

SE的核心是基于面向对象概念的语法制导编辑程序，设计SE的关键问题之一是在系统内部如何用类的概念来表达靶语言的各种语言成分。

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Combined with vacuum packaging and pasteurization, NaL and Nisin were used for sauced duck preservation.

利用乳酸钠和乳酸链球菌素在肉制品保鲜中的协同作用，将乳酸钠和乳酸链球菌素结合真空包装、低温杀菌技术应用于酱鸭保鲜。

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Objective To explore the diagnosis and the differential diagnosis of vascular ED and functio-nal ED.

目的进一步探讨血管性ED和功能性ED的诊断与鉴别诊断.

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The reward function in the optimal stopping problem is a mixed function that is the summation of a termi-nal continuous gain function and an integral form of a function including immediate consumption and investment at any time over a random interval.

而最优停时问题的报酬函数则是一个混合函数，此函数是由一个终端连续增益函数和一个包含随机区间中任意时刻上的消费与投资的函数积分组成。

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The job function, management and training method for internal auditor were researched, to pro-vide reference pattern on the establishment of inter-nal auditor system.

探讨了内审员的工作职能和管理与培训方法，为建立内审员制度提供了参考模式。

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Modern western philosophy isn't scientific philosophy, for not establishing consciously practical way of thinking, although it attaches importance to man's realistic activity, and does criticize and assail severely traditio nal metaphysics.

现代西方哲学虽然注重人的现实活动，对传统形而上学理论展开了猛烈的批判与抨击，但没有自觉地建立实践思维方式，因而是不科学的。

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Less than two hours later , Kubitz was almost back to non-nal.

不到两个小时, 库比兹几乎已恢复正常.

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A Study of the Addition Reaction Between 4-Oxo-pente-2-nal and Thioacetic Acid

4-羰基-2-戊烯醛与硫代乙酸加成的研究

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