查询词典 vapor density

Based on Stuart et al.'s electron density evolution equation, the electron density evolution process in fused silica film irradiated by short-pulse laser for τ∈[0.015] ps were studied by means of numerical method. The effects of initial electron density N and laser pulse width τ on laser threshold intensity I and damage threshold fluence. F were analyzed respectively.

基于STUART等人的电子密度演化方程，运用数值模拟方法，研究了脉宽为τ∈[0.01， 5]ps范围内单脉冲激光作用下熔融石英薄膜中电子密度演化过程；讨论了初始电子密度、激光脉冲宽度对阈值功率密度和阈值能量的影响；分析了初始电子密度、激光脉冲宽度对多光子离化及雪崩离化的影响。

Sables tended to select old-growth coniferous forests, and they specially selected small tree's density, big tree's density, big tree's DBH and Log's density sables preferred milddle cover's site to open sites and high cover's sites. Habitat Selection varied with season. In winter.

紫貂喜好原始针叶林，对小树密度，大树密度、大树DBH和倒木密度有很强选择性，紫貂喜好中盖度林地而避免开阔地和高盖度林地，一年四季其生境选择有一定的差异。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

Topological optimization system of variable density method based on finite element software;2. Interface depths inversion of potential field data with variable density model;3. According to the characteristics of the cold insulation box of Fractionating tower, it is considered that the effect of inner-filling on the construction is related with the variable density, then the relative formulation in the condition of n.

根据分馏塔保冷箱的特点，认为内填料对结构的作用与变密度有关，推导了无水平位移下的相关公式；对此结构在有水平位移下内填料的发育进行仿真分析，并将内填料的作用与结构的楼层柱的旋转角建立联系；最后根据得到的结论对分馏塔保冷箱在风与内填料作用下进行了非线性分析，得到结构的极限承载力。

Density has great effect on yield of root tuber, but its exhibition on colony and individual plant is different. It was shown that there was a negative correlation between the individual yield and density, while a positive correlation between the colony yield and density.

结论密度对白首乌产量性状影响较大，但在群体和个体上表现不同，与个体块根产量呈负相关，与群体根的生物产量呈正相关。

This article indicates that when the average temperature of gas in gas-insulated electric equipment is some greater than the temperature of gas density relay then the gas density relay can't reflex the gas density correctly too and gives a positive error.

本文指出，当电气设备内气体平均温度高于密度继电器温度一定程度时，气体密度继电器也不能正确反映电气设备内的气体密度，而出现正误差。

The rusults indicated that the temperature in forest was lower and the growth of ginseng was slower than out of forest, the yields were also lower; with the increase of ginseng age, the rate of net photosynthesis became higher; when the canopy density of forest reached to about 0.7～0.8, the net photosynthesis, hight, root weight, transpiration,chlorophyll conten of ginseng were higher than others, indicating that both lower and higher canopy density would reduce the rate of net photosynthesis of ginseng, and that the canpoy density of stand could be adjusted to satisfy the temperature and lighting for ginseng, and to provide the optimum ecology enviorment for the growth of ginseng.

结果表明，在生长季节内，林内温度低于林外温度，林下人参生长发育较差，产量较低；林分郁闭度为0.7~0.8时，人参的净光合速率、株高、单根重、叶绿素含量等指标较高；而郁闭度过高或过低都会影响人参生长发育；随着人参年龄的增加，净光合速率有逐渐升高的趋势。通过人为调节林分郁闭度的方式来满足人参对温度和光照因子的需求，为林下人参生长发育提供最适宜的生态环境。

The laryngeal lymphatic system is characterized by regional differences in lymphatics density with the highest density in the larynx surface of epiglottis and lowest density in the vocal folds.

喉各分区淋巴管分布具有显著差异，其中以会厌喉面分布密度最高，声襞淋巴管的分布密度最低。

At equilibrium,the rate of the metal dissolution is equal to the rate of the cathodic reaction,and the rate of the reaction is directly proportional to the current density by Faradar's law ;therefore:（6）and the Nernst equation can be rewritten(7)where B is a constant and i0 is the exchange current density,which is defined as the anodiccurrent density at the standard electrode potential.

在平衡，金属溶解的率与负极反应的率是相等的，并且反应的率与电流密度直接地是比例由Faradar的法律；因此：(6)和能斯脱等式可以被重写(7) B是常数的地方，并且i0是交换电流密度，被定义作为正极电流密度在标准电极电位。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Summary In copyright infringement cases,if the alleged infringer uses or even plagiarizes the copyrighted works or parts thereof,which causes no substantially adverse effect on the normal exploitation of the work,nor does it inflict any substantial damages to the right owner,the de minis doctrine should be applied to exempt the liabilities of the defendant and seek the balance of interests between the right owner and the general public embodied by the copyright law.

在侵犯著作权案件中，如果被控侵权行为人虽未经著作权人的同意，使用甚至抄袭了受著作权保护的作品或作品的片段，但若情节轻微，未对该作品的正常使用产生任何实质不利的影响，亦未对权利人的权利造成实质性的损害，则应适用&不计琐细原则&，免除行为人的责任，以寻求在权利人利益与著作权法所体现的社会公共利益之间的平衡。

This new product will become our best seller.

这个新产品会成为我们最畅销的产品。