Secondly , the finite element analysis of composite materials interlaminar stresses is researched in this paper . the interlaminar stresses slightly influenced by the composite materials ' lamella curvature , but not influenced by the distributing form of interlaminar stresses follow thickness are found 本文在研究复合材料层间应力的有限元分析时，发现复合材料层合壳曲率对层间应力大小有一定影响，但对层间应力沿厚度的分布形式影响不大。
The results showed that lamellae were fit tissue for mycelia isolation , and success percentages of mycelia isolation with media pdas , pdaw , bm , pda are 74 . 4 % , 35 . 5 % , 15 . 6 % and 8 . 9 % respectively . the results also showed that stipe , mycorrhizae , and soil with the fungi are not fit for tricholoma matsutake isolation 另外，马铃薯葡萄糖麦数滤汁培养基( pdaw ) 、 bm培养基、 pda培养基也从菌褶2曾东方博士论文:腐生与共生食用菌菌丝体分离、培养及其dna鉴定研究分离到松茸菌丝体，分离成功率依次是35 . 5 % 、巧
Optical microscopy and electron microscopy were employed to study the microstructure and ultrastructure of the leaves of low temperature germplasm and measure or count the lengths of diachyma cells , number of diachyma cells per unit leaf area , chloroplast number per diachyma cell , the number of diachyma cell layers and the number of granum lamella of low - temperature wheat germplasm 应用光学显微镜和电子显微镜研究了小麦低温种质叶片显微和超微结构，测量统计了叶肉细胞长度、单位面积叶肉细胞数目、单个叶肉细胞中的叶绿体数目、叶肉细胞层数和叶绿体基粒片层数。
Two - level algorithm is developed to deal with the two objective function optimal designs that are the radial constraint force and the axial force of the upper structure . corresponding program has been developed to optimize the prestress of the lamella ' s suspen - dome and kiewitt ' s suspen - dome . analysis of construction process is the key problem to suspen - dome 本文采用二级优化的步骤对径向约束反力和上部杆件轴力两个优化目标同时进行了预应力优化，并编制了相应的程序对联方型和kiewitt型弦支穹项结构进行了预应力优化设计。
The result of routine tissue dyeing assay showed symptoms of hyperemia , swell , fatty , vacuolar and granular degeneration in the liver cells of treated carp ; hyperemia , swell and vacuolar degeneration in the renal tubular epith epithelial cell and lymph cell inroad ; hyperemia , swell , hyperplasia and slough in the gill lamella epithelium ; hyperplasia in lymph cell , gill lamella length becomed different and frame foul - up . the influence become severer with the concentration increasing 其破坏程度随着浓度的增加而愈发严重。建议在使用中一定要科学施药，环境水域中乙氰菊酯的浓度以不超过0 . 685mg l为宜，醚菊酯的浓度以不超过0 . 057mg l为宜，氯氰菊酯的浓度以不超过0 . 020 g l为宜。
Throught the comparation between supsendome and single layer reticulate , the advantages of suspend - dome was expatiated . through the analysis of lamella ’ s , rib - loop , rib - loop tilted bar type shell , the influence of lattice type to member ’ s force , joint ’ s displacement , reaction , intergral stability was studied , the suitable lattice type for suspendome was put forward 通过对联方型、肋环型、肋环斜杆型、肋环斜杆型、肋环斜杆型弦支穹顶结构进行的分析优化比较,研究了网格形式对构件内力、节点位移、支座反力、整体稳定的影响,提出了适合弦支穹顶结构的合理网格形式。
The machine is applicable to the plasticity material to inhibit the craft , such as hurtles to press , curve , turn over the side , lamella to pull to stretch etc . craft , also can used for correct , pressing to pack , the emery wheel model , the cold crowded metals spare parts model , the plastics product and the powder product of inhibit and model craft 本机器适用于可塑性材料的压制工艺，如冲压、弯曲、翻边、薄板拉伸等工艺，也可用于校正、压装、砂轮成型，冷挤金属零件成型、塑料制品及粉末制品的压制成型工艺。
When inadequate n was added , the chloroplast structure in mesophyll cell was damaged in ear leaf , the amount of carbohydrate decreased in mestome sheath , and excessive n - redistribution and n - transportation to grain from vegetative mass appeared , which resulted in earlier leaf senescence . excessive n application led to too high activity of nitrate reductase , excessive vigorous nitrogen metabolism and too much exhaustion of carbohydrate in ear leaf , which resulted in the lack of enough carbohydrate in the lower leaf , meanwhile , the expansive chloroplast grana lamellae in leaf mesophyll cell and starch grain without nuclear in mestome sheath cell was observed , which led to the decrease of chlorophyll content and photosythetic capacity in maize leaf , then the early senescence occured 氮肥用量不足导致穗叶叶肉细胞叶绿体结构性差，维管束鞘细胞碳水化合物累积减少,营养体氮素再分配率大而引起叶片早衰；而过量供氮则导致生长后期硝酸还原酶活性过高，氮素代谢过旺，消耗了大量碳水化合物，以致下位叶不能得到充足的碳水化合物供应而提早脱落，同时叶肉细胞叶绿体片层结构膨胀，呈“肉汁化”特征，维管束鞘细胞淀粉粒大量消耗，无核淀粉粒出现，从而叶片叶绿素含量下降，光合能力降低而出现早衰。
The evolution on particle morphology , microstructure , grain size and microstrain of the mixture of ti and al elemental powders during mm has been investigated . it was found that the nanocrystalline composite powders with extremely fine ti / al alternative lamellar structure ( lamella spacing about 0 . 1 ~ 0 . 5 m ) could be prepared by mm using proper processing parameters 研究了ti 、 al单质元素混合粉在机械球磨过程中的颗粒形貌特征、组织结构、晶粒尺寸以及微观应变的变化规律,表明在适当的球磨工艺条件下可获得具有极细层片间距( 0 . 1 ~ 0 . 5 m )的纳米晶ti / al机械复合粉。
At the same time because of the insolubility of calcium phosphate , topical extortionate concentration of calcium ions and phosphate ions , the vary of ph value and the effect of osteoblasts and proteins in oregano - bone matrix , the calcium ions and phosphate ions gave birth to crystal nucleus and came into being osteo - salt deposition , furthermore to form mineralized bone . finally , at the host osseous lamella far away the implanting area we found some material granules 借助于扫描电镜等测试手段，实验发现随着植入时间的延长，材料区域的面积不断缩小，晶体颗粒间的颈部连接断开，颗粒的结构和形貌发生了较大的变化，且材料的内部出现了生命元素碳和硫等。
