超比
- 与 超比 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In the paper, the present state of ultra-fine-grained materials, severe plastic deformation and Asymmetrical-ARB are introduced in detail; the craft to fabricate ultra-fine-grained copper using Asymmetrical -ARB is studied fully; the problem of combination of interface is settled; the affect of homogenizing annealing、 annealing and rolling method on mechanical properties of materials prepared by Asymmetrical-ARB is discussed and analyzed when control parameters of rolling mill such as the press—ratio、 the asynchronous rate、 rolling—speed are fixed, and a kind of craft that meets to requirement of experiment is made out.
本文对超细晶、大塑性变形技术、异步轧制目前国内外研究进行了详细的介绍;对异步叠轧方法制备超细晶铜工艺做了较为细致的研究:解决界面复合问题;在压下率、异步比、轧制速度等轧机控制参数固定条件下,探讨了均匀化退火工艺、去应力退火工艺和轧制方式对异步叠轧材料力学性能的影响,并进行了分析,制定出符合实验要求的轧制工艺。
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Then, the quasi-overconsolidation ratio is introduced to consider the effect of super pore pressure; and the fitting formulation is applied to consider the influence of shearing strain. The degenerated formulation of undrained strength of saturated loess is deduced at last; and its reasonableness is proved by the test results.
在此基础上,引入似超固结比的概念来考虑超孔隙水压力的影响,应用拟合公式来考虑剪切变形的影响,最终推导出了饱和黄土不排水强度的退化公式,与试验结果的对比证明了理论公式预测结果的合理性。
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Suprasegmental : aspects of speech that involve more than single sound segments. The principle suprasegmental features are syllable, stress, tone, and intonation .
超音段:涉及了比单个音段更多东西的语音方面,主要的超音段概念有音节、重音、声调和语调。
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Their specific surface area and acid strength were measured, and their catalyt and SBA-15 were ic performance was evaluated in the synthesis of fructone by acetalization of ethyl acetoacetate with ethylene glycol.
用浸渍法制备了一系列负载型磷钨酸及其铯盐催化剂,载体包括超稳Y沸石、脱铝超稳Y沸石、SiO2和SBA-15,测定了催化剂的比表面积和酸强度,并在乙酰乙酸乙酯与乙二醇液相缩合制取苹果酯反应中考察了催化剂的性能。
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In this study,intracellular recordings were performed and 34 neurons in MGC of Agrotis segetum were recorded;all those neurons responded to sex pheromone.12 neurons just tested by sex pheromone,and 22 neurons both tested by sex pheromone and electrical stimulation.
两种刺激方式均能诱导出兴奋反应,电刺激得到的兴奋反应比由性信息素刺激引起的要短;MGC神经元对两种刺激的超极化反应幅度影响没有显著性差别,在电刺激实验的2 2个神经元上,超极化反应幅度和抑制时间都与神经元本身放电频率有一定的相关性。
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For the synthesis reaction of chalcone, cyclohexanone aldolization and biodiesel,γ-Al_2O_3-NaOH-Na solid superacid has a satisfactory catalytic activity. With hypnone and phenylaldehyde as raw material, amount of catalyst 7.5% wt% of material, mole ratio of hypnone and phenylaldehyde 1:1.1, reaction temperature 40℃, after 3 hours, the yield of chalcone can be up to 96.88%. With cyclohexanone as raw material, amount of catalyst 10% wt% of material, reaction temperature 190℃, after 3 hours, dimmer of cyclohexanone can be up to 85.66%.
将该固体超强碱催化剂应用于查尔酮、环己酮自缩合以及生物柴油的合成反应中,该改性固体超强碱催化剂表现出了良好的催化活性:以苯乙酮和苯甲醛为原料,反应温度为40℃,催化剂用量为反应物总质量的7.5%,苯甲醛与苯乙酮摩尔比为1:1.1,反应3h查尔酮产率可达96.88%;以环已酮为原料,催化剂用量为原料总质量的10%,反应温度为190℃,反应3h,二聚物的总收率可达85.66%;以动物油和甲醇为原料,醇油摩尔为9:1,催化剂用量为动物油质量的2%,反应温度为70℃,反应3h后,生物柴油的收率可达91.8%。
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The invention relates to an electrochemical method for preparing ultra-fine tantalum powder, wherein it uses the mixture slat flux with CaCl2 or CaCl2 as electrolyte; composites Ta2O5 powder/block with metal collector as solid cathode; uses graphite or inertia anode as anode; uses reference polar to control the electrolysis level, under inertia gas to electrolyze at 500-1000Deg. C; and the electrolysis time should make electrolysis electricity reach needed amount; reduces Ta2O5 into ultra-fine metal tantalum powder.
本发明涉及一种超细钽粉的电化学制备方法,以CaCl2或者含有CaCl2的混盐熔体为电解质,将Ta2O5粉末或块与金属集流体复合作为固态阴极,以石墨或惰性阳极作为阳极,用参比电极控制电解电位在惰性气氛保护下进行电解,电解温度控制在500-1000℃,控制电解时间使电解电量到达到理论所需电量及以上,将五氧化二钽电化学还原为超细金属钽粉。
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The synthesis of eight compounds ( borneol ester and isoborneol ester) and other esters catalyzed by nanometer solid superacids were also researched. In addition, we still analyzed the distinction of esterification yield of borneol ester and isoborneol ester. The particle size, surface area, changes of profile and acidity of nanometer solid superacids were mensurated and analyzed by TEM, BET, XRD, IR and acid indicator.
对纳米固体超强酸催化合成系列正、异冰片酯及其它酯的反应作了一定的研究,论文分析了正、异冰片酯化反应的差异,并用TEM、BET、XRD、IR及酸标指示剂等方法和手段对纳米固体超强酸的粒度、比表而积、形貌变化及其酸性大小进行了分析和测定,通过IR、~1H NMR、~?
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The influences of the reaction time,the reaction temperature,the mole ratio of isovaleric acid to isoamyl alcohol,the quantity of solid surperacid catalysts on the conversion rate of iaovaleric acid were studied.
介绍了一种利用超强酸TiO2/SO2-4催化合成异戊酸异戊酯的新工艺,研究了固体超强酸催化剂用量、酸醇摩尔比、反应时间和反应温度对异戊酸转化率的影响。
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A shaping method of monolayer super-hard abrasive worm grinding wheel and influence of the method on coulour line of abrasive panical,and the wearing character of the grinding wheel are studied.
研究了电镀单层超硬磨料蜗杆形砂轮的成形方法及其耐磨粒等高性的影响,得到了镍结合剂单层超硬磨料砂轮磨损规律及磨削比并在此基础上探讨了此种砂轮在低速磨削状态下加工硬击面的可行性,获得了良好效果。
- 推荐网络例句
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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.
此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。
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To get the business done, I suggest we split the difference in price.
为了做成这笔生意,我建议我们在价格上大家各让一半。
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After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.
一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。