高强度的

The AMF spore average density was 24.88 per 20 g soil , the species richness was 1.94 per soil sample, the species diversity index was 2.56, and the species evenness was 0.65. Glomus, but they all were of prominent genus in the investigation area and Acaulospora, Scutellospora were of common genus while Entrophospora was rarely found. In the 13 species AM fungi, G.mosseae was of prominent species, and G.geosporum, G.intraradices, G.etunicatum were of common speices, while the others were of rarely species. There were 87.5% sand fixation plant were infected with arbuscular mycorrhizal fungi, the highest spore density, the strongest infection strength of the whole roots and the best species richness belonged to Chenopodiaceae while Polygonacea was the lowest.

四属AM真菌中，Glomus为优势属， Scutellospora 、Acaulospora为常见属，Entrophospora则为稀有属；十三种AM真菌中，G.mosseae、G.geosporum分别为优势种、最常见种，G.intraradices，G.etunicatum为常见种，其余均为稀有种；五科固沙植物中，87.5%的植物能被菌根侵染，其中藜科植物孢子密度最高，整个根系侵染强度最强，种的丰度最高，蓼科植物孢子密度、整个根系侵染强度、种的丰度则最低；禾本科植物不仅具有最好的丛枝结构，且具有相对高的亲和性，能与12种AM真菌共生。

PE stretched film/twisted film, is also called LLDPE flexibility film/packaging film, is a kind of polyethylene plastic film which is transparent, flexibility and intensity, as well as nonpoisonous and hurtless soft, has met the standard of international environment protection, under the condition of no-heating, can do cold stretching vertically and horizontally, and pack kinds of products depending on its self-stickiness, moreover, makes the packed goods keep tense and not loose in a long term, and wraps all goods as the integer tightening with its high intensity and large flexibility force.

查看如何让您的商机始终排在搜索结果的前五位！PE拉伸膜/缠绕膜，又称LLDPE弹性膜/包装膜，是一种透明、富有弹性及强度且无毒无害的柔软聚乙烯塑料薄膜，符合国际环保卫生标准，可在不加热的情况下，进行纵横双向冷拉伸，依靠它本身自粘性包装各种产品，并可使货物长期保持张力而不至于松散，强度高、弹性拉力大、对任何形状的物品都能裹紧，裹成一个整体。

Theoretical analysis shows that Faraday magnetooptical effect has the anisotropy, and Faraday rotation is depend not only linearly on the magnetization Min paramagnetic and ferromagnetic media or the sublatbee's magnetization Mi in ferrimagnetie and antiferromagnetie media, but also on the high-order terms of M or Mi.

理论分析表明，法拉第磁光效应具有各向异性特性；法拉第旋转不仅与顺磁性和铁磁性介质中的磁化强度M或反铁磁性和亚铁磁性介质中的次晶格磁化强度Mi的线性项有关，而且还应与M或Mi的高次项有关。

SEM analysis finds that the fractures are intercrystalline plus quasi-cleavage fractures under quasi-motionless state;with the increase of stress intensity factor,fractureschange from transcrystalline quasieleavage fractutes to microvoid-coalescence dimple plus cleavage frac-tures,The increase of fracture toughHess of 8090Al-Li alloy under high stress intensity factor is associ-ated with the deformation mechanism and the change of precipitation Free Zone of grain boundary.

扫描电镜分析发现，准静态下的断裂为沿晶和准解理混合断口；随着应力强度因于的增加，断裂从准解理断裂过渡到准解理和显微空穴聚集的韧窝断裂舶混合断口。高应力强度因于率下断裂韧度的提高与其变形机制和晶界无沉淀区的变化有关。

Results of the computation under the same welding temperature field show that the longitudinal residual stresses in the weld are as high as the yield strength of the plate in the strength and TEC evenmatched joints, lower than the yield strength of the plate in the strength evenmatched and TEC undermatched joints. It also has something to do with the strain hardening exponent of the weld metal in the strength evenmatched and TEC overmatched joints.

计算结果表明：等强等胀匹配的焊缝区纵向残余拉应力水平高达母材的屈服强度，等强低胀匹配的焊缝区纵向残余应力水平低于母材屈服强度，等强高胀匹配的焊缝区纵向残余应力水平还与焊缝应变硬化指数有关。

With higher stress,the value and rate of stress relaxation are greater.This investigations also show a remarkable stability of the surface residual stress during fatigue for shot peened and following 200C/2h treated specimens.

国内外有关喷丸强化后残余应力的松弛行为及规律研究很少，尤其是对超高强度结构材料的研究更少，因为在工程应用上存在着一个普遍的认识，即：材料的强度越高，残余应力越稳定ls。

The main ways to solve these problems are as follow: 1 to mix steel slag with cement clinker, grained iron slag and fly ash to improve the activity of mixture and the intensity of steel slag cement ; 2 to add suitable excited agent, such as calcium sulphate and sodium silicate.

根据对大掺量钢渣水泥的组分活性差和强度低的主要影响因素及其解决方法进行试验的结果认为：可以通过掺加水泥熟料、粒化高炉渣和粉煤灰的方法来改善钢渣的物质组成，进而提高其强度，但必须加入适当的激发剂。

It also elaborates on the reasonable choices of the geometric parameters and cutting parameters of the cutting tool materials, cutting tools to ream, drill and mill high strength steel and super-high strength steel.

在选择切削速度时，在工件材料的强度和硬度较高的情况下，应适当降低切削速度，减小刀具每齿进给量，按工件材料的强度选择铣削速度，按工件材料的硬度选择铣削用量。

Corrosion resistivity in Hank's artificial body fluid, compression strength and hardness for heterogeneity Ti-Fe-Mo-Mn-Nb-Zr alloys were investigated.

摘 要：研究了不同成分的Ti-Fe-Mo-Mn-Nb-Zr合金的压缩强度、硬度及其在Hank's人工体液中的耐腐蚀性能，得到了高压缩强度、硬度与牙本质相近的钛合金。

When the positive curving angle increases, the total losses of cascades increase, the outlet flow angles vary acutely along the spanwise, the intensity and size of outlet trailing vortex increase obviously, however the intensity and scale of outlet passage vortex vary slightly, secondary flow at both midspan and endwall increase and the total averaged kinetic energy of secondary flow increases..

随着叶片正弯曲角的增大：叶栅总损失增加；叶栅出口气流角沿叶高剧烈变化；叶栅出口尾缘涡的强度和尺度明显增大，而叶栅出口通道涡的强度和尺度变化都不大；叶栅中部和端部二次流均增强，总平均的二次流动能增大。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。