细小的

Porcine parvovirus is a major cause of reproductive failure in swine, manifested as embryonic resorption, fetal mummification, abortion and stillbirths .The virus is ubiquitous among swine throughout the world and is enzootic in most herds that have been tested.

猪细小病毒(porcine parvovirus，PPV)为引起母猪繁殖障碍的主要病原之一，猪细小病毒感染的主要特征是孕猪在怀孕前容易受到感染，可引起胚胎或胎儿的感染和死亡，导致母猪发生流产、死胎、胎儿木乃伊化及新生仔猪的死亡。

The effect of fines on the reed pulp was studied in this paper.

对芦苇浆中的纤维与细小纤维的组成进行了分析，研究了细小纤维对造纸的影响。

The deformation mechanism is mainly the single-slip and cross-ship, the fracture mechanism is mainly the congregation of transgranular micro-hole, and large uniform deformation occurred before tough fracture, and therefore, the ability of plastic deformation and the mechanical properties of the material were remarkably improved. These fully indicate that the new melt-treatment developed in this work is an effective and advanced technique, and further testify that the improvement of metallurgical quality of the material is the key to enhance its mechanical properties, especially its plastic deformation performance. The results of tensile and compression tests at elevated temperature also indicate that the suitable hot-working temperature range is 400～450℃. 4. A steady-state plastic flow exists during the plastic deformation of the aluminum sheet used for pressure can at elevated temperature. A hyperbolic sine relationship can be satisfied between the steady-state flow stress and strain rate by introducing an Arrhenius term which involves some thermal activation parameters, i.

压力罐用铝材中的主要冶金缺陷为Al〓O〓夹杂物、气孔及富Fe杂质相；高效熔体处理显著改善了材料的冶金缺陷的存在形态，使含杂量明显减少、夹杂物尺寸变细小且分布均匀，富Fe杂质相变为细小、分布均匀的团球状或短棒状的复杂化合物，同时也明显细化了结晶组织；此外，由于高效熔体处理有效地减少了材料中裂纹萌生源数量，因而改变了材料的塑性变形微观过程及断裂方式，主要以单滑移和交滑移进行塑性变形，断裂方式为穿晶微孔聚集型，韧性断裂前产生了大量的均匀变形，不易出现变形失稳，从而显著提高了罐用铝材的塑变能力和力学性能。

Porcine parvovirus and pseudorabies virus are the main causes of infectious reproductive failure in swine.

猪细小病毒和伪狂犬病毒均是引起母猪繁殖障碍的主要病原，猪细小病毒的危害主要表现为，导致初产母猪或血清学阴性的经产母猪发生繁殖障碍，其它年。。。

Meanwhile, it is also illustrates that the smaller chromium carbides have less restriction to forming thin splats than larger ones, which beneficial to limit the size of pieces removed by impact of the sand particles, and the higher volume fraction of small chromium carbide may effect the erosion through enhancing interlamellar bonding of the splats which leads to increase the erosion resistance of the coating.

揭示了细小碳化物颗粒有利于获得扁平粒子厚度较小的涂层结构，可减小涂层冲蚀磨损过程中每次剥落的体积；较高含量的细小碳化物颗粒有利于提高涂层扁平粒子间的结合，从而提高涂层抗冲蚀磨损性能。

Interval after the calf muscle at the surface also has a small branch from the arterial blood vessels do further branch, composed of deep fascia close to the surface of the vertical line going plexus, which also has a traffic outside the nest several skin arteries and peroneal artery do small branches and musculocutaneous perforator vessels of the bridge-like traffic.

在小腿后肌间隔的表面也有一由动脉干细小分支血管的进一步分支组成的紧贴深筋膜表面纵向走行的血管丛，其中也有一支交通窝外侧皮动脉和几支腓动脉干细小分支及肌皮穿支的桥状交通血管。

For evaluating the vaccinal effect,This indirect ELISA was used to detect sera collected from 160 dogs; after one year, 60dogs among these dogs was also collected sera for detection in this indirect ELISA.

为了评估犬细小病毒的免疫情况，将建立的间接ELISA方法应用于140份犬细小病毒血清抗体的检测，而且一年后，对其中的60只犬再次采集血清进行检测。

The result shows that B combines with N prior to Al at high temperature and brings about coarse particles of BN (about 900 nm), which effectively reduces the amount of fine and dispersive AlN particles, and BN precipitate clinging to MnS precipitation coarsens MnS particles, the pinning of austenite grain boundary is alleviated and the grain growth of ferrite is suppressed.

结果表明高温时B优先于Al与N结合生成粗大的BN粒子(约900 nm)，有效降低了热轧过程细小而弥散的AlN析出量，同时BN依附MnS析出而粗化MnS粒子，减弱了细小弥散析出粒子对奥氏体晶界钉扎以及相变后铁素体晶粒长大的抑制作用。

Meanwhile, it is also illustrates that the smaller chromium carbides have less restriction to formimg thin splats than larger ones, which beneficial to limit the size of pieces removed by impact of the sand particles, and the higher volume fraction of small chromium carbide may effect the erosion through enhancing interlamellar bonding of the splats which leads to increase the erosion resistance of the coating.

揭示了细小碳化物颗粒有利于获得扁平粒子厚度较小的涂层结构，可减小涂层冲蚀磨损过程中每次剥落的体积；较高含量的细小碳化物颗粒有利于提高涂层扁平粒子间的结合，从而提高涂层抗冲蚀磨损性吉臣。

In this bath, maleic acid was an inhibitor, when its concentration was kept at 20 mg/L, the deposition rate could reduce to 6.17μm/h, the content of nickel decreased to 1.74% and the resistivity was 7.51μΩ·cm; Potassium ferrocyanide inhibited deposition of copper, when its content was 0.5 ppm, the deposition rate decrease to 3.38μm/h, the content of nickel was 2.03%, the resistivity can reduced to 5.41μΩ·cm, the copper deposits also had higher (111) plane orientation. Thiourea was also an inhibitor in this system, when its concentration was kept at 0.8 ppm, the deposition rate was 4.72μm/h, the content of nickel in the film was 1.20%, the resistivity can reduced to 5.46μΩ·cm, at the same time, the deposition at (111) plane orientation become more favorable.

结果表明，马来酸在该体系中是抑制剂，当其浓度为20 mg/L时，镀速降为6.17μm/h，镀层镍含量降为1.74%，表面电阻率降为7.51μΩ·cm，铜层颗粒细小均匀，更有利于在(111)面上的结晶；亚铁氰化钾的加进可以明显降低镀，当其浓度为0.5 ppm时，镀速为3.38μm/h，镀层镍含量降为2.03%，表面电阻率降为5.41μΩ·cm，铜层颗粒细小均匀，(111)晶面衍射峰增强；硫脲在体系中也显示为抑制剂，当其浓度为0.8 ppm时，镀速降到4.72μm/h，镀层镍含量为1.20%，表面电阻率降为5.46μΩ·cm，形成的铜颗粒很小，同时(111)晶面衍射峰增强，有利于铜在(111)面上结晶。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。