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By using electron microscopy, three strain of baculoviruses were found in cul-tured Penaeus monodon with white spot syndrome , twe of them were present in nucleus of host cell, one of them was present in cytoplasm of host cell.

斑节对虾白斑病是白斑综合症杯状病毒所致，根据病毒形态结构大小和寄生部位分为3个种株，2个种株为细胞核杆状病毒，1个种株为细胞质杯状病毒。

In the present paper, a theoretical model of the mobility for multidisperse particles is developed. The present model is the extension of the previous theoretical model and the semi-empirical model for the monodisperse partcles. This model includes the influence of particle size distributions and is suitable for all particles with different materials and with different size distributions.

通过理论分析，本文提出了多分散性尘粒电迁移率数学模型；此模型是典型的电迁移率模型和单分散性尘粒电迁移率半经验模型的扩展，它考虑了粒度分布的影响，适用于各种物质的尘粒和各种粒度分布的尘粒。

Mycoplasm infection is widely present in conventional mini-pigs at the present.

目前在普通级小型猪中存在支原体的感染。

Corona present at base of perianth in one to several series of showy filaments; innermost series membranous, partially to entirely fused, margin entire or fimbriate, often incurved over nectar chamber; extra-staminal nectariferous disk present around base of androgynophore, fused to base of hypanthium.

副花冠宿存在基部为一到数轮艳丽的花丝；最内部轮膜质，部分完全愈合，边缘全缘或流苏状，在花蜜的寝室上方通常弯曲的；在雌雄蕊柄的基部周围的特别雄蕊的分泌蜜汁的花盘宿存，对托杯的基部愈合。

But the effluent ammonium in the anoxic reactor, where enough NO2 present were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO-2 and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria.

但在足够NO2存在并且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH+4并没有被亚硝化单胞菌以NO2为电子受体氧化为NO-2和N2等化合物而得以去除，可能是因为系统内不存在该类型的亚硝化功能菌。

Females will clump and allopreen males in nonbreeding plumage if a red male is not present, but may act aggressive towards other females and brown males if a red male is present.

女性将丛和allopreen男性在nonbreeding羽毛，如果一个红色的男性是不存在，但可能的侵略行为，对其他女性和男性的布朗，如果一个红色的男性是目前的。

Therefore, whenever patients present with severe, recurrent blisters on their palms and soles, especially in elderly patients present with severe, recurrent blisters on their palms and soles, especially in elderly patients with hemorrhagic lesions, dyshidrosiform pemphigoid should be considered.

因此，当病患在手掌及脚底出现严重、常常复发的水泡，特别是在老年人而且病灶主要是以出血性的形式来表现者，异汗样类天疱疮这个疾病应列入考虑。

RESULTS: On day 2 after PH, oval cells began to proliferate around the portal area, and matrilin-2 deposition was observed in the hepatic sinusoids in the periportal area. On day 9, proliferating oval cells were present in the hepatic acini, and matrilin-2 upregulation was noted. On day 12, as oval cells differentiated to form hepatocellular nodules, matrilin-2 was distributed mainly in the periphery of the nodules, and little protein was present in the nodules.

结果： 肝脏部分切除术(partial hepatectomy， PH)后第2天，卵圆细胞开始向门静脉周围区域增殖， Matrilin-2主要出现在门静脉周围的肝窦状隙内；术后第9天，卵圆细胞进一步向肝实质内增殖， Matrilin-2表达增加；术后第12天，随着卵圆细胞分化为小肝细胞结节，大多数Matrilin-2位于结节周边，少数出现在结节内。

In this paper,the present status of the Polycarboxylic superplasticizer research at home and abroad,the present status of three different synthesises research,action mechanism were introduced in detail.

介绍了聚羧酸系高性能效减水剂国内外研究现状、目前3种不同合成方法的研究现状及优缺点、作用机理的研究，提出一些亟待深入研究的问题及聚羧酸系高性能减水剂今后的研究方向。

BACKGROUND: At present, studies show that a kind of stem cell community which in many kinds of organizations can differentiate into tissue cells of different embryonic layers; but those are different from embryonic stem cells, embryonic stem cell will lose the part differentiation potential gradually during the development of pregnancy, and will present some special phenotypes or the molecular markers, as CD105 and so on, will call it postembryonic pluripotent stem cells.

背景：目前研究认为在胚胎发育后的多种组织中存在一类干细胞群体，可分化为不同胚层的组织细胞；但又不同于胚胎干细胞，随着妊娠期间胚胎的发育胚胎干细胞会逐渐失去部分分化潜能，会出现一些特殊表型或分子标记，如CD105，称其为胚胎后亚全能干细胞。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。