查询词典 coefficient problem

The results showed that soil electrical conductivity had obviously spatial variability,and semi-variance and Moran's I coefficient analysis accordantly illuminated that the spatial correlation range was large and the relativity was strong on 30 April,29 June and 16 November;while the spatial correlation range was small and the relativity was weak on 20 April,14 July and 16 August.

结果表明：土壤电导率具有明显的空间变异性，半方差函数和Moran's Ⅰ系数分析说明了4月30日、6月29日和11月16日的空间自相关范围较大，相关性较强；4月20日、7月14日和8月16日的变程偏小，空间相关性较弱。

The results showed that soil electrical conductivity had obviously spatial variability, and semi-variance and Moran's I coefficient analysis accordantly illuminated that tile spatial correlation range was large and the relativity was strong on 30 April, 29 June and 16 November; while the spatial correlation range was small and the relativity was weak on 20 April, 14 July and 16 August.

结果表明：土壤电导率具有明显的空间变异性，半方差函数和Moran's I系数分析说明了4月30日、6月29日和11月16日的空间自相关范围较大，相关性较强；4月20日、7月14日和8月16日的变程偏小，空间相关性较弱。

Chongqing has been in fast develop period according to international stardard. Considering the relationship between Engels coefficient of a nation and car manufacture, there is an fast accretionary phase of car numbers in Chongqing. The information that the number of car raise 22% per year just prove it.

根据有关国家恩格尔系数与轿车工业发展的关系：恩格尔系数50%为轿车起步阶段， 40%-50%为缓慢增长期，20%-40%为高速增长期，可以得出，重庆市现已进入轿车高速增长期，重庆市主城区综合交通规划资料显示的机动车年22%增长率已正好印证了这一点。

objective to determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of edaravone, by gas chromatography.methods sample solution was injected on a gdx column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.the residue was calculated by the external standard method.results the linearity was good over the range of 25 μg/ml～400 μg/ml,with the correlation coefficient of acetone being 0.996 and the average recovery 96.8%.conclusions the method was proved to be simple,rapid,practical and highly sensitive.it is an efficient method for the quality control of acetoacetic ester.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。方法：采用固定相为二乙烯苯乙基乙烯苯型高分子多孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。结果：该方法在丙酮浓度范围在25 μg/ml～400 μg/ml内呈良好的线性关系，响应曲线相关系数为0.996，平均回收率为96.8%。结论：本法简便，快速、实用，灵敏度高，可有效地用于乙酰乙酸乙酯的质量控制。

The obstacle (the altitude of 900 mm) process for both sides of a planetary gear train was analyzed in ADAMAS. It is proved that the physical dimension of the planetary gear train, bodywork center position and attachment coefficient are the key effect factors. The driven moment, velocity and normal pressure sharply increased as each wheel surmounting obstacles, but they were moderate after the front wheel came over the obstacles. Another weaker pulse occurred when the rear wheel began climbing, and then the parameters reached a plateau.

行星轮系的结构尺寸、车体质心位置及附着系数对越障高度影响较大；各轮系越障时出现驱动力矩、速度和正压力急增的现象，前轮系的前轮越上障碍后，各参数值趋于平稳，后轮越障时又出现瞬时脉动，但脉动较小，后轮系也有相同的变化趋势，各轮的阻力矩和输出功率与正压力变化趋势相同。

The electro-optic coefficient as afunction of the photon energy with different values of parameter a and different values of parameter V0 were also plotted.

电光系数的最大值也随着参数a的增大而增大，随着参数V0的增大而减小，表明电光系数将随着量子阱非对称性的增大而增大。

Bifurcation and choas of the zigzag sampled phase detect frequency synthesizer;2. When incidence coefficient is afunction of the time,the parameter rogions in which the models appear choas behavior are given.

该文研究了Lin Weimin等人给出的一类具有非线性传染力的SIRS模型，证明了在某些参数区域内极限环的存在性和唯一性，以及在传染系数与时间有关时，模型存在混沌性态的参数区域。

The First Law of thermodynamics and exergy analysis method were used to construct factors such as coefficient of performance , exergy efficiency and exergy index according to the AHT combined Carnot cycle model established. Aimed at the insufficient of the classical thermodynamics analysis method, the optimization relationships between the specific heating load and operating parameters, and between SHL and COP, was reasoned out using the Finite Time Thermodynamics method according to the characteristic of investment and capacity of AHT, and endo-reversible combined Carnot cycle model. Hence, the rationality of the energy utilization and the economic index, which related to the total heat transfer area, were both taken into account.

首先利用热力学第一定律分析法和〓分析方法，按照建立的吸收式热变换器理想联合卡诺模型，构建包括性能系数、热力学效率、〓效率、〓指数在内的吸收式热变换器热力学评价体系；然后针对经典热力学分析方法的不足，根据热变换器的功能、投资等方面的特点，按照内可逆联合卡诺模型，利用有限时间热力学理论方法，导出了吸收式热变换器比供热率与操作参数、比供热率与热力学性能系数的优化关系，从而使优化结果兼顾了系统用能的合理性和与总传热面积相关的反映设备投资回报的经济性指标。

Alcaligenes eutrophus WSH3 was selected as the strain for the production of polyβ-hydroxybutyrate and copolymer of 3-hydroxybutyrate and 3hydroxyvalerate . This study is aimed at finding an operative way leading to high PHB and PHBV productivity, high yield coefficient and high content of PHB and PHBV. The main research results are as follows

本文以真养产碱杆菌(A.eutrophus)WSH3为聚-β-羟基丁酸和3-羟基丁酸与3-羟基戊酸的共聚物的生产菌株，以实现PHB和PHBV发酵过程的高的生产强度、高的产物对基质的产率系数和高的聚合物含量为目标，进行了PHB及PHBV发酵条件的研究，主要研究内容和结果如下

Several calculation formulations have been established, which possess the advantages of that ①any of the final formulations is a linear algebraical equation system with respect to parameters of nodal displacement and velocity;②much higher accuracy can be obtained than the direct integration methods of dynamic analysis;③arbitrary number of time elements can be chosen when the space—time model is applied; and ④calculating procedures are quite simple since several time—coefficient matrices are introduced to the formulations.

当采用时间—空间有限元模型时，对时间单元的数目没有任何限制；(4)由于引入了时间系数矩阵，使计算过程大大简化，并且可引用已有的各种单元分析成果，具有很强的通用性。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。