1、

A query processing method under null values environment in relational databases

空值环境下关系数据库查询处理方法

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2、

Normal Form Theory of Relational Database under Fuzzy Null Value Circumstances

模糊空值环境下关系数据库的范式理论

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3、

However, the effect of temperature is not significant by testing the regression coefficients in the combined effect.

结果表明影响都是极显著的,但通过回归系数的检验得出温度在综合影响中是不显著的。

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4、

A model of heat transfer from smoke to liquid copper is established based on principle of energy balance. The average temperature and the intensity of heat transfer of smoke with different air surplus coefficients are calculated by using the model.

根据能量平衡原理,建立烟气对铜液的传热模型,并对不同空气过剩系数下的烟气平均温度和传热强度进行计算。

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5、

In order to enhance the capability of heat transfer from smoke to liquid copper, air surplus coefficient must be reduced properly.

为增强烟气对铜液的传热能力,必须适当地减小空气过剩系数。

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6、

The factors of stress concentration in thin plates used as springs in electric switches were required.

要求定出用作电器开关簧片的薄板中的应力集中系数.

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7、

Significant linear correlations were found between transparence, PAR attenuation coefficient, euphotic depth and total suspended solid, especially inorganic suspended solid, while chlorophyll a was the most nonsignificant light attenuator.

透明度、PAR衰减系数、真光层深度与悬浮物浓度存在显著性线性相关,并且与悬浮物中无机颗粒物相关性最好,而与叶绿素a、脱镁叶绿素及溶解性有机碳相关性很低。

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8、

Based on the analysis of failures, measures were taken to protect shaft body from break, prolong motor life and improve safety factors.

在分析产生上述问题的基础上,采取轴体防断措施,并对马达进行了改进,大幅度提高了动力钻具的使用寿命及安全系数。

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9、

Conversion factors were given for adjusting ECSC equations to fit Chinese.

并提出校正系数用于矫正ECSC方程.

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10、

Two computational methods, Efficiency/ Air Excess Coefficient Method ( EAEC) and Enthalpy Conservation Method ( ECE), for gas temperature measurement based on gas components analysis were presented.

叙述了两种根据燃气成分推算高温燃气温度的计算方法&效率/余气系数法和焓值守恒法。

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11、

Domestic Resource Cost Coefficient ( DECC) has been widely used in measuring comparative advantages in the last few decades.

过去二、三十年里国内资源成本系数(DRCC)被广泛用于比较优势的分析。

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12、

The theory of DCFM can be derived from total probability theory ( TPT) based on the consideration of uncertainties in seismic demand analysis and seismic capacity analysis.

需求能力系数法以考虑地震需求分析和结构抗震能力分析过程中的不确定性为出发点,通过全概率的理论推导得到了衡量结构性能水准的性能指标&能力需求比和置信概率。

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13、

Further more, the empirical formulas about average heat transfer coefficient and pressure drop of the DAE-2 tube and DAEC tube are given in this paper, which can be used to design condensers.

此外,本文给出了DAE-2管和DAEC管平均换热系数及阻力损失的计算关联式,可用于冷凝器设计。

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14、

And also the calculating method of elastic resistance coefficient is put forward.

提出弹性抗力系数计算方法这一思路.

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15、

This bias divided by the guidance loop gain will be the miss due to this cause.

这个偏差除以制导回路的放大系数,就是这个原因所引起的脱靶量.

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16、

The dietary overlap coefficient and food resources of enhancement species among demersal fishes in Bohai Sea

渤海重要底层鱼类食物重叠系数与鱼类增殖

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17、

Thus, the recoverable potential of the CBM can be reasonably reflected by the CBM resources calculated through the emendation of the desorption coefficient and isothermal adsorption curve.

因此通过解吸系数法校正、等温吸附曲线法校正后,计算的煤层气资源量更能反映煤层气的可采潜力。

provided by jukuu

18、

Natural Desorption Rate and Attenuation Coefficient of Coal Seam Gas and its Significance

煤层瓦斯初始自然解吸速率和衰减系数及其意义

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20、

Determination of Liquid-phase Mass Transfer Coefficient in Packing Desorption Tower and its Computer Program Design

填料解吸塔中液相传质系数测定及电算程序设计

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