高强度的

A important conclusion is that fluvial-lacustrine, karst, diluvial, colluvial, glacial and outwash deposits, which formed between early Pleistocene and early middle-Pleistocene, have high cement degree, low permeability, high intensity, low deformation, and good engineering properties, but modern riverbed phase deposits, which formed in between late middle-Pleistocene and Holocene, are loose, highly permeable, weak, highly deformable and have bad engineer characteristics, so they are susceptive to differential settlement, piping, drafting, liquefaction problems.

得出早更新世—中更新世早期河湖相沉积、岩溶沉积、洪积、崩坡积、冰碛和冰水沉积密实度高，胶结较好，透水性差，强度高，变形小，工程性质较好，而中更新世晚期—全新世现代河床沉积较松散，渗透性高，强度较低，变形较大，易发生差异沉降、管涌、流土、地震液化等工程地质问题的重要结论。

The importance of Gauss theorem in electrostatics;the relation between electric flux and electric intensity; the notes of finding intensity of electric field by Gauss theorem ; the rules of choosing Gaussian plane and the relation between the intensity of electric field on Ganssian plane and space-charge.

高斯定理在静电学中的重要性，用高斯定理求电场强度注意的问题，取高斯面的原则及高斯面上的电场强度与空间电荷的关系。

Multiple wavelengths characteristics of dayside aurora activities were investigated with these keograms and in reference to all-sky images. It was found that there are three repeatedly appearing aurora activity regions along the dayside aurora oval. They are, Region A around 0900MLT in which aurora moves poleward while its intensity decreasing, and its form changingfrom arc to corona with time; Region B around 1330MLT in which aurora moves equatorward while its intensity increasing, and its form changing from corona to arc in time; Region C around 1330MLT in which aurora expands poleward while its intensity decreasing, and its forma evolving from arc to multiple arcs in time. There is a narrow belt of aurora activity in North-South direction between Regions A and B, which is dominated by weak and red corona aurora.

初步分析发现，沿日侧极光卵不论磁静日还是磁扰日，在三个波段上都同时观测到了四个重复出现的极光活动区，即0900MLT附近的A区、1330MLT的B区和1630MLT的C区以及1200MLT附近的G区。A区内的极光活动由低纬向高纬运动，强度逐渐变弱，形态由较宽的弧状极光向冕状极光演变；B区内的极光活动由高纬向低纬方向运动，形态呈现为冕状极光向较窄的极光弧的演变，极光强度逐渐增强；C区极光活动向高纬方向展宽，强度逐渐变弱，极光由单弧向多重弧演化；而在A与B之间存在一个纬度范围相对较窄的极光活动区G区，该区的极光呈现暗弱的冕状极光。

The results show that the perfect strength can be obtained under oxygen partial pressure about 20% O2, overhigh or low oxygen partial pressure is unfavorable for recrystallization of Fe2O3, which causes a decrease of pellet strength. The original hematite will be transformed into magnetite on reduction firstly when carbon-burdened hematite pellet is roasted in oxidizing atmosphere, and then the magnetite will be oxidized to secondary hematite, which is more active than original hematite, therefore, the induration strength of pellet is able to be enhanced.

研究结果表明：内配碳赤铁矿氧化球团在接近空气配比(氧含量约20%，体积分数)的氧化性气氛中焙烧强度最大，氧含量过高或过低都会影响Fe2O3的再结晶，使球团强度降低；在氧化性气氛中焙烧含碳赤铁矿球团时，原生赤铁矿先还原为磁铁矿，磁铁矿再氧化成活性较高的次生赤铁矿，提高了赤铁矿焙烧固结性能和球团强度。

Orthogonal experiment under special condition showed that modifier M has marked effect on properties of no bake sand. Other factors such as modifier B,phosphate concentration and aluminum hydroxide have some impact on properties of binder. It can be found by experiments that strengths of no bake sand are raised notably by binder that modified by modifier B. Modifier B can reduce the strength of no bake sand at high room temperature apart from condition of low room temperature that it can accelerate the reaction and strengthen the sand. Modest content of modifier M in binder has some improvement to anti-wettability of sand. But modifier B has not such notable effect. Electronic microscope shows that near cracks in no bake product there are fibrous shape substances formed when the samples are moistured in high humidity air for sometime.

通过改性剂B对粘结剂自硬砂的性能影响试验发现，改性剂B能显著提高粘结剂自硬砂的强度，在0℃左右很低的环境温度下改性剂M有利于提高自硬砂的反应速度和砂型强度外，但在较高环境温度下，改性剂M均降低粘结剂自硬砂的强度，但是适量的改性剂M有利于改善自硬砂的抗吸湿性，而改性剂B对于改善自硬砂的抗吸湿性的作用不如改性剂M明显，电镜观察发现抗吸湿性较好的自硬砂在高湿度下存放一定时间后，在粘结膜裂纹处会形成一种绒毛状物质，该物质对裂纹具有愈合作用，这种绒毛状物质中具有改性剂M中的某种成分，且含量很高，由此说明改性剂M对提高抗吸湿性有利。

The results showed that the tensile strength,the tensile modulus and the shore A hardness of CO all increased by raising of the temperature and prolonging the time,while the tear strength,the tensibility,the tensile set at break and the compression set of CO all decreased,and the hardness,the tensile strength,the tensibility,the compression set all tended to the bala...

结果表明，二段硫化温度越高，硫化时间越长，胶料的拉伸强度和定伸应力越大，硬度越高；而撕裂强度、伸长率、拉断永久变形以及压缩永久变形越小，其中胶料的硬度、拉伸强度、伸长率、压缩永久变形在一定时间后基本上趋于平衡，较好的二段硫化条件为150℃～160℃×3～4h。

It has been warranted through experiments and practical application that rare-earths-high-aluminium heat-resistant nodular iron has some intrinsic properties which are worthy of reconimandation, namely,that it will not scale after long periods of use at 1050-1100℃, will hardly break while being hammered into castings, runners or risers as the high-temperature tensile strength reaches 14-19 kg/mm2 at 800℃ or≥l3.3kg/mm2 at 900℃, with the room temperature strength close to HT 30-50 and the unnotched impact str...

本文介绍了稀土高铝耐热球墨铸铁的生产实践、化学成分；探讨了稀土作用及其用量和控制；论述了稀土和铝加入方式以及冷却速度对金相组织的影响；并对铸造工艺、铸件缺陷及分析、耐热性能及使用效果作了阐明。试验和使用证明：稀土高铝耐热球墨铸铁在1050～1100℃长时间工作不起氧化皮，热强度800℃时，14～19kg/mm~2，900℃时≥13.3kg/mm~2，室温强度近于HT30—54，a_k≈2～6kg·M/cm~2，锤击铸件或浇冒口，很难碎裂，并能机械加工。可以认为是以我国富产资源为原料，能用各种炉子熔炼、耐热和综合机械性能均较高硅、中硅中铝球铁、高铝片墨铸铁为高的一种耐热铸铁，也是镍铬系耐热材料较好的替代品。

Using high alumina mullite as rawmaterial, cement or micro-powder as binding agents, the Hi-Al2O3 castables is one unshaped refractory and has the benefits of high strength,especially under medium temperature, and good thermal shock resistance.

高铝浇注料是以高铝莫来石原料为主，以水泥或微粉为结合剂的不定型产品，具有强度高，特别是中温强度高，热震性好的特点。

It mainly used for porcelain mould, industrial arts,room-out rilievo,decorations,room-out internal clapboard,plaque, wire etc. It suits for porcelain mould＆ technology required good fluid, high intensity,high absorbing waer ratio,low expanding technology index,high mold intensity,good endure grind, increase frequent time, cost down the mould ensure quality production of our company is able to produce kinds of technology index gypsum powder according to clients requirement, exiguous and coagulation time may adjust according to clients requirement.

主要用于陶瓷模具、工艺美术、室外浮雕、装饰、室内隔板、装饰板、线材等，瓷用石膏粉使用于陶瓷模具、工艺所要求的流动性能好、强度高、吸水率高、膨胀率低的技术指标，模具强度高、耐磨性好，提高了使用周期，降低了模具生产成本，保证了产品质量。

The results show that the plasticity zone and dynamically quiescent layer become fine equiaxed recrystallisation under the thermo-mechanical effect, the grains in the heat-affected zone grow up because of the effect of friction heat. When the rotation speed is 2 500 r/min and the welding time is 12 s, good joint is achieved, and the tensile shear strength of the joint reaches 9.24 kN. The tensile shear strength of spot increases with increasing tool rotation speed, with increasing welding time, the strength increases first, while then reduces. The microhardness of plasticity zone is high, but is slightly lower than that of the base metal, the minimum value of microhardness is in the heat affected zone. When the energy input of joint is high, the fracture type of spot is mode Ⅰ, and the tensile shear strength is high; on the contrary, when the energy input of joint is less the fracture type of spot is mode Ⅱ, and the strength is low.

结果表明：塑性区和动态静止层的晶粒在热和力作用下发生动态再结晶形成细小的等轴晶，热影响区的晶粒在摩擦热作用下长大变粗；搅拌头旋转速度为2 500 r/min，焊接时间为12 s时，可以获得力学性能较好的焊点，焊点的剪切强度达到9.24 kN；焊点的剪切强度随搅拌头旋转速度的增大而增大，随焊接时间的延长先增大后减小；塑性区的显微硬度较高，但略小于母材，接头显微硬度的最小值分布在热影响区；焊点热输入量较多时，接头为Ⅰ型断裂，焊点的剪切强度较高；焊点热输入量较少时，接头为Ⅱ型断裂，焊点的强度较低。

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。