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In the second chapter, we introduce the definition of pointwise convex modulus. The relation between numbers of pointwise convex modulus and relevant geometric properties will be discussed. we research the characteristics of numbers of pointwise convex modulus .

在本文第二部分引入了点态凸性的定义,并讨论了点态凸性的取值与相关几何性质之间的关系,研究了点态凸性取值特点。

Finally, simulation software was developed with Visual C++ and Delphi for 2D molding analysis of MIM, which affords facilities for the quality forecast of 2D thin wall parts and optimal design of mold and process parameters. In the research of molding performance of MIM feedstock, for the shortcoming of capillary rheometry, it was propounded that using spiral mold test molding performance of feedstock, and a set of spiral mold was creatively designed with quickly exchange gates and closed mold cavity. With the spiral mold, an orthogonal experiment was made on getting regress equation of flow length L〓 of the heavy alloy feedstock. Then the rule of L〓 varying with Q〓, P〓, and ΔT〓 was discovered. Q〓 ranks first in the influence on process parameters of molding performance, P〓 and Δ T〓 second. Therefore the injection rate Q〓 should be controlled primarily to improve the flow performance of feedstock.

在MIM喂料注射成形性能研究方面,针对毛细管流变仪测试法衡量流动性能的不足,提出使用螺旋线具测试喂料熔体的注射成形性能,创造性地设计了一套可快换浇口,腔封闭的螺旋测试,并在螺旋测试上采用正交实验设计,得出了高密度重合金喂料流动长度L〓的回归公式,揭示了L〓随Q〓、P〓、△T〓和S〓的变化规律,并得出工艺参数对成形性能影响的强度顺序为Q〓最大,P〓与△T〓其次,因而改善喂料流动性能应优先控制注射速率Q〓。

5 M deck traveling slide shuttering form s were used for the construction of cast-in-situ box girders of both the south and north approach bridges of Huangpu Bridge over Zhujiang River in Guangzhou.

m 移动架,该架在设计及应用过程中有很多特点和创新,其中很多的关键技术可为国内移动架的施工提供很好的参考和借鉴。

On basis of the analysis for cores and well-logging, the authors have thoroughly studied the sedimentary facies types and characters of Chang 6 oil-bearing formation of the Baibao region with casting thin sections, SEM, trace elements and porosity and permeability analysis and a great deal of indoor testing data. The authors propose that the sedimentary facies type of Chang 6 oil-bearing formation of the Baibao region is a sublacustrine slump turbidite fan for the first time, and lithology is lower componential and textural maturities micro-fine feldspar sandstone primarily, with graded bedding, fluidified convolute bedding, slipping-cut and deformational structures, minitype syngenetic faults, flute cast, groove cast, load cast and other turbidite sedimentary facies signatures.

作者在岩心描述和测井分析基础上,结合铸体薄片、扫描电镜、重矿物、微量元素和孔渗分析等大量测试资料,对该地区长6油层组沉积相类型及特征进行深入研究,首次提出白豹地区长6油层组属于湖底滑塌浊积扇沉积体系,岩性以成分和结构成熟度均偏低的微-细粒长石砂岩为主,具粒序层理、液化包卷层理、滑动截切和变形构造、小型同生断层、槽、沟和重荷等浊积沉积相标志。

Methods 40 healthy adult cats were equally devided into group A with sodiumchloride, group B with bFGF, group C with GbE and group D with bFGF+GbE in random. All animals were operated to establish the feline models of cerebral focal ischemia-reperfusion by the approach of left transorbital. The certain madicine intervene were take at 0 h, 24 h, 48 h after the models established. The neurological defects score was evaluated by Philips' criteria score in 1 d and 7 d. The physiological changes were observed by HE stained and electron microscope.

健康家猫40只,随机分为生理盐水对照组、bFGF治疗组、GbE治疗组和bFGF+GbE联合治疗组;采用左侧眼眶入路制作猫大脑中动脉缺血再灌注型;制后即刻、24h、48h分别给予相应的药物干预;制后1d、7d分别进行神经功能缺损评分;制后7d对脑组织切片进行光镜和电镜下病理及超微结构观察。

The study covers the vertical displacement distribution character of each mode of Rayleigh wave, theoretical dispersion curve character of multi-modes Rayleigh wave and the characters of the max-mode Rayleigh wave dispersion curve in different layers structure, which are velocity increasing with deep, high velocity layer within underground, low velocity layers within undergroan and high velocity surface layer, within the depth of 15 meters.

研究了地层速度随深度递增型、地层中有硬层或软夹层型、表层为高速的公路型等4种地层结构在15m深度内,瑞利面波各阶态的位移幅度分布特征、多阶态面波的理论频散曲线特征以及不同地层结构上的&最大&面波频散曲线的特征。

The unstrapped, single-ring strapping and dual-strapping magnetron anode blocks are taken into consideration.

重点计算和比较了无隔带、有一环隔带和有两环隔带结构磁控管的式分隔度。

The result notes that dynamic triaxial test preferably simulate the actual stress state of grading macadam, and Uzan model which considers the shear performance of material can better reflect stress states of grading macadam. Regression coefficients of the model obviously present nonlinear characteristic with moisture changed, and to further influence dynamic resilient module.More the module is larger, more diminishing rate of maximum tensile stress on pavement Bottom is smaller. To enhance draining function and strength, the gradation should been rigid controlled, and which the content of less than 0.075mm is controlled between 5~7% and spring-back is controlled between200~300MPa are appropriate.

结果表明,动三轴试验较好地拟了级配碎石层的实际受力状态;Uzan型考虑了材料的剪切性能,更能反映了级配碎石在隧道路面中应力状态;随含水量的变化,Uzan型中回归系数变化呈明显的非线性特征,进而显著影响级配碎石的动态回弹量的变化;级配碎石量越大,路面层底的最大拉应力减小率越小;为了兼顾到级配碎石层的排水渗透功能和强度,应严格控制级配,特别是0.075mm以下的含量宜控制在5%~7%,级配碎石的回弹量宜控制在200~300MPa之间。

At present,the design and producing technology of pulp mold comparatively hang behind,especially in the process of pulp mold's produce,it costs huge energy and is inefficient.

的生产和使用过程不造成污染,是一种环保型的包装材料,但目前国内纸的设计和生产技术比较落后,特别是纸生产中能耗大、效率低。

Drills, broaches, measuring tools, plastic moulds, sheer blades, guide pins, etc.

适合制作裁剪厚度6mm以下的金属板的下料及冲压、螺纹切削刀具。钻头、拉刀、测量工具、塑料、剪切刀及定位销等。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。