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Central parts of mechanism of elevating and equilibrating were also processed static, dynamic, flectional analyses with finite element method by using Pro/MECHANICA. In the end, its dynamical model was built and simulated in ADAMS, dynamical responding of its hydraulic elevating part was analyzed, gun muzzles elevation disturbance in different fire angle and so on were obtained, work performance of mechanism of elevating and equilibrating was more studied.
使用Pro/MECHANICA对高平机的主要零件进行了有限元的静态、动态、屈曲等分析;最后在ADAMS中建立高平机动力学模型并进行仿真分析,分析其液压高低机部分在火炮发射时的动力学响应,获得了不同射角下由高平机引起的炮口高低扰动等数值,进一步验证了高平机的工作性能。
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Central parts of mechanism of elevating and equilibrating were also processed static, dynamic, flectional analyses with finite element method by using Pro/MECHANICA. In the end, its dynamical model was built and simulated in ADAMS, dynamical responding of its hydraulic elevating part was analyzed, gun muzzle's elevation disturbance in different fire angle and so on were obtained, work performance of mechanism of elevating and equilibrating was more studied.
使用Pro/MECHANICA对高平机的主要零件进行了有限元的静态、动态、屈曲等分析;最后在ADAMS中建立高平机动力学模型并进行仿真分析,分析其液压高低机部分在火炮发射时的动力学响应,获得了不同射角下由高平机引起的炮口高低扰动等数值,进一步验证了高平机的工作性能。
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The kinetic behaviors of ethylene homo- olymerization and ethylene / l-hexene co-polymerization , catalyzed by the metallocene catalyst PS-DVB-MC in an 0.5 L stainless steel reactor , were studied. The effects of polymerization conditions on ethylene polymerization , such as concentration of catalyst , temperature of polymerization , pressure of ethylene , molar ratio of AI / Z r , etc ., were also investigated . Some leading results were as follows : the activity of the catalyst PS–DVB- MC for ethylene homo-polymerization was high ( 1.053 x 107 gPE / mol Zr·h ), but the molar ratio of AI / Zr was low ( 350:1 ); the catalytic ability for ethyleneα-olefin ( such as l hexene etc .) co-olymerization was great , and the corresponding activity come up to a maximum of 1.753 x 107 gPE / mol Zr·h while concenlration of l-hexene was 0.080 mol / L ; the molecular weight of polyethylene was about 180,000 , meanwhile the molecular weight distribution was narrow ( 2.19 ); the bulk density of polyethylene and ethylene / l-hexene co -polymer were 0.25 and 0.34 respectively .
采用0.5L高压不锈钢反应釜,对催化剂PS–DVB-MC催化乙烯均聚和乙烯/ l-己烯共聚合的动力学行为进行了研究,详细考察了催化剂浓度、反应温度、压力、Al/ Zr比、1-己烯浓度等因素对乙烯聚合反应的影响,得到如下主要结论:催化剂PS-DVB-MC具有催化乙烯均聚的高活性(1.053×107g PE / mo1 zr.hr),低Al / Zr比( 350:1 );具有良好的催化乙烯与α-烯烃(如1-己烯等)共聚的能力,在1-己烯浓度为0.080 mol / L时,催化活性达到最大(1.783×107 g PE / molZr.hr);乙烯均聚产物的分子量在18万左右,分子量分布窄( 2.19 )。
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This invention provides a capillary using for fixing the optical fiber; the invention can simultaneously solve the problem relating to the clamp when the head face is processed slantingly in the final manufacturing process of the capillary, the outside shape of the glass capillary is restricted by the structure of optical components such as fiber waveguide component and so on.
提供一种光纤固定用毛细管,其能够一举同时解决在毛细管的制造工序最后阶段倾斜加工端面时的与夹具相关的问题、和玻璃毛细管的外面的形状被光波导元件等光学部件的结构制约的问题等。
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SVD is extended after analysis and discussion, and an deduction, i. e., Upsliding Slantwise Vorticity Development is produced.
1通过对倾斜涡度发展理论的探讨和分析,对理论进行了推广,提出上滑倾斜涡度发展理论;对由倾斜涡度发展理论推得的全型垂直涡度方程与经典的涡度方程做了简单的比较推导,指出经典涡度方程是全型涡度方程在等熵面平坦时的一个特例,全型涡度方程描述了等熵面倾斜的地区涡度的发展。
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In this paper,by the matrix method,a necessary and sufficient condition for two n-dimensional synclastic simplexes to be able embedded in the n-dimensional Euclidean space is obtained,as well as for two group finite point sets.
该文利用矩阵的方法,获得了两个同向的n维单形同时等距嵌入E~n维欧氏空间的一个充分必要条件是:对于预给(n+1)~2个距离,满足一组具有行列式形式的不等式组det,由此可以得到两组等数量的有限点集合到E~n维欧氏空间中等长嵌入的一个充分必要条件。
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Temple has preserved the architectural, historical sites and cultural relics are: the Eastern Jin Dynasty was founded in the Main Hall; monk Bodhidharma, the Southern Dynasties in the wash bowl cut this spring; Tang Yi construction of the tower and the stone blocks; South Han at the 1000 Buddha Tower; period of the Sung Dynasty and Jialan Liuzu Dian Dian, and inscriptions, statues, trees and Terminalia chebula bodhi tree, and other Buddhist Xinwu.
寺内至今保存的建筑、历史遗迹及文物主要有:始建于东晋的大雄宝殿;南朝时达摩和尚在此开凿的洗钵泉;唐朝建造的瘗发塔和经石幢;南汉时的千佛铁塔;宋朝时期的六祖殿和伽蓝殿;以及碑刻、佛像、诃子树和菩提树等佛家信物。
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Chapter three is the degradation of Abamectin in soils. The results show:(1) The decomposition of Abamectin is fastest in Aquic Cambosols while slowest in Udic Cambosols in five kinds of different soils.(2) Organic matter content in soil is the most important factor which influences the degradation half-life of Abamectin in soil, and their relative coefficient arrives at 0.9323, but pH value, total nitrogen, CEC and field maximum moisture capacity correlate little.(3) Soil organic matter, soil temperature and pesticide concentration can obviously affect Abamectin degradation in soil, in addition, the degradation half-life of Abamectin in sterilized soil is far more than that in non-sterilized soil, which maybe contributes to microorganism in soil. Chapter four is the microbial degradation of Abamectin.
第三章研究了阿维菌素在土壤中的降解,结果表明:(1)五种不同类型土壤中,阿维菌素在潮湿雏形土中降解最快,而在湿润雏形土中降解最慢;(2)土壤有机质含量与阿维菌素半衰期相关性较强,相关系数为0.9323,而土壤酸碱度、总氮含量、阳离子交换量和田间最大持水量等因子与阿维菌素半衰期相关性较小,说明影响阿维菌素在土壤中降解的最主要因子为有机质含量;(3)土壤有机质、土壤温度和农药浓度等因素对阿维菌素在土壤中的降解有较大影响,此外灭菌条件下其降解半衰期远大于未灭菌时的半衰期,这表明阿维菌素在土壤中的降解可能和土壤微生物有关。
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The result shows that when HPLC adopts 254 nm as scan wavelength, and the mixture of acetonitrile and water according to appropriate proportion as flowing phase, the parameters such as accuracy, repetition and precision et al for the method are all good to satisfy the essential rules of pesticide residue determination.Chapter three is the degradation of Abamectin in soils. The results show:(1) The decomposition of Abamectin is fastest in Aquic Cambosols while slowest in Udic Cambosols in five kinds of different soils.
第三章研究了阿维菌素在土壤中的降解,结果表明:(1)五种不同类型土壤中,阿维菌素在潮湿雏形土中降解最快,而在湿润雏形土中降解最慢;(2)土壤有机质含量与阿维菌素半衰期相关性较强,相关系数为0.9323,而土壤酸碱度、总氮含量、阳离子交换量和田间最大持水量等因子与阿维菌素半衰期相关性较小,说明影响阿维菌素在土壤中降解的最主要因子为有机质含量:(3)土壤有机质、土壤温度和农药浓度等因素对阿维菌素在土壤中的降解有较大影响,此外灭菌条件下其降解半衰期远大于未灭菌时的半衰期,这表明阿维菌素在土壤中的降解可能和土壤微生物有关。
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After the research it is held that when internal fault takes place in the transmission line where the series compensation device is located, the corresponding protective measures, e.g., the forced triggering the by-pass gap, etc., is the effective approach to avoid the appearance of excessing level of transient recovery voltageand oversize coupling current.
文章结合我国南方电网河池固定串补及平果可控串补工程,对超高压输电线路装设串联电容补偿装置后的系统状况进行了比较深入的研究,指出一些系统问题,如过电压水平升高、潜供电流增大和可能发生的次同步谐振均源于串联电容补偿装置的固有特性,通过研究认为当串补所在输电线路发生内部故障时,采取强制触发旁路间隙等保护措施,是避免出现系统恢复电压水平超标和潜供电流增大等问题的有效途径。
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。