利用系数

• The advanced development on the new kinds of scroll profile has become the research focus in the profile design . used a new type scroll compressor of the combination profile in this paper , a scroll is constructed following this : the inner turn consists of the standard involute of circle , and the same to the outer turn . then the middle turn is one of arc
  本文所研究的新型组合曲线涡旋压缩机最内圈以基圆渐开线构成,中间段以圆弧过渡,最外圈由圆渐开线构成,能发挥不同型线的优势,是一种能满足多性能较优要求、形状性态良好的涡旋型线,与传统的基圆渐开线构成的涡旋压缩机相比,具有效率高、泄露量少、体积利用系数大等优点。
• The new concepts , such as the active supporting coefficient , the coefficient of strength utilization , the coefficient of pretensioned bolt length , the effective compressive zone , the coefficient of pretensioned stress diffusion , the framework and mesh structure of the effective compressive zone , and the critical supporting stiffness were put forward
  提出锚杆主动支护系数、强度利用系数、预应力长度系数、有效压应力区、预应力扩散系数、有效压应力区骨架网状结构及临界支护刚度等概念。
• In order to analyze quantitatively and evaluate classifiably agro - ecoclimatic resources , based on average data of multiple years from 165 meteorological stations of northwest china ( gansu , ningxia and qinghai ) , resource indices cr , efficiency indices ce and utility coefficient k were calculated by applying the dynamic models of agro - ecoclimatic suitability degree . then , based on month to month average data of multiple years of efficiency indices ce , twelve types of agro - ecoclimatic resources were identified through the analysis of fuzzy cluster . the results indicated that latent potentialities , matching condition and utility degree of agro - ecoclimatic resources have obvious characteristics of spatial differentiation . on the basis of the calculation results , the suggestions about exploitation and utilization of the agro - ecoclimatic resources in northwest china ( gansu , ningxia and qinghai ) are put forward
  为了量化分析和分类评价农业生态气候资源，根据西北地区（甘宁青） 165个气象台站多年平均的气候资料，采用农业生态气候适宜度的动态模型，首先计算了农业生态气候的资源指数、效能指数和利用系数；然后通过对多年逐月平均效能指数的模糊动态聚类，划分出农业生态气候资源的12个类型并进行了相应评价，结果表明农业生态气候的资源潜力、匹配状况和利用程度具有明显的地域分异特征，进而在此基础上提出了开发利用农业生态气候资源的若干建议。
• Some tests for liangang sinter adding bos slag have be done in the laboratory and plant trial . the results show that in the range of bos slag percentage , from 0 % to 8 % , with the increase of bos slag percentage , the sinter speed has been lower , but the sinter strength and productivity of sinter product have been higher , the sinter productivity will be the maximum when bos slag percentage is 4 % ; the siner reducibility has been improved , the normal operation of bof will not be effected anymore because of the circulation of p form bos slag
  对烧结矿配加转炉钢渣进行了实验室研究和工业试验，在钢渣配比0 % 8 %的范围内进行的研究表明：随着钢渣配比的增加，烧结速度稍有下降，烧结矿强度、烧结成品率均有所提高，利用系数在4 %左右时达到最大值；烧结矿还原性得到改善；钢渣中带入的p的循环富集不会影响炼钢的现行操作。
• According to thermal state similitude model experiment of the langya mountain hydropower station , we adopt different velocity of air ventilation and exclude air proportion of upriver and downriver , this paper contrast the air distribution of the dynamo floor on each method , and educe the best projects of arch crest supply air that adapt to langya mountain hydropower station ’ s dynamo floor : g = 17 . 4 10 ~ 4m ~ 3 / h , 22 vents , d = 600mm , the scale of volume 1 : 3 , t0 = 16 . 9 . it ’ s also thought that improved any side of volume can reduce its temperature . when study on the air supply of langya mountain hydropower station ’ s underground dynamo floor by cfd software , it proved that cfd software is correct when compare with model experiment . when arrange the number of 5 kinds of vents , it concluded that the number of vents 14 to 22 , it can ’ t change velocity , in 36 to 40 can lead to reduction of velocity . when vent in 14 to 36 , the parameter kt doesn ’ t change , when the number is as large as 36 , kt reduces
  在此基础上,模拟了5种风口布置方案和送风量的改变对发电机层温度场和速度场的影响,获得了些可供参考的结论:在风量和送风速度不变的条件下,风口个数在( 14 ~ 22 )小范围变化时,工作区平均风速基本不变,大幅度增加风口个数( 36 ~ 44 )就会导致工作区平均风速的降低,风口数在14 ~ 36之间对工作区的温度不均匀系数影响不大,当风口数> 36时,温度不均匀系数随着风口数的增多而变小,速度不均匀系数一直随着风口数的增加而减少;在风口布置和尺寸不变的情况下,送风量变化时,工作区平均温度随送风量增大而降低,平均温度的降低量逐渐趋于减少,能量利用系数先是随着送风量的增加而增大,后随送风量增加而减少。
• In the analyse of gradation and classification the study use the method of factors and the dynamic model of sum taking the weight and make revision with the land use coefficient and the land economic coefficient . the grade of synthesize not only reflect the effect to each factor but outstand the leading restrict factor
  应用因素分析法对区域农用地的等级进行了研究，采用动态加权求和模型作为指数综合的方法，再用土地利用系数和经济系数进行修正，使综合分值既能反映出每个因素对农用地质量的影响，又能突出主导限制性因素的作用。
• Firstly , basic theory of wavelet transformation and mallat algorithm are introduced . then photothermal images are fused using means of the fusion rules based on selecting larger coefficient absolute value and area - based maximum standard variance . it corrects the disturbance of object ’ s surface status and reduces the influence of object ’ s surface characteristic during infrared detection
  首先介绍了小波变换的基本理论及mallat算法,然后利用系数绝对值取大和基于局部方差最大化的融合规则对图像进行融合,修正了物体表面状况的干扰,降低了物体表面特征对红外检测的影响。
• The paper analyses the control principle of general several intelligent lighting control methods , analyses their advantages 、 disadvantages , applications , and the proceedings should be paid attention to in the applications ; analyzes the characters and applicable scope of common several interior illumination calculation methods ( the point method 、 the coefficient of utilization method 、 the unit capacity method ) , designs a lighting system for a living room ; and brings forward to the system function of easy home lighting intelligent control system , studies design ways of its software and hardware . the system uses at89c51 micro - controller , programs with assemble language , uses effective anti - jamming measures to ensure it operates reliably
  论文分析了现有常用的几种智能照明控制方式的控制原理，优、缺点，使用场合，以及在使用中应注意的事项；分析了常用室内照度计算的几种方法(逐点法、利用系数法、单位容量法)的特点和适用范围，设计了某一起居室的照明系统；并提出小康住宅智能照明控制系统的系统功能，研究了该系统的软、硬件设计方法，采用at89c51微处理器作为控制器，用汇编语言编程，并采取有效的抗干扰措施以确保其运行可靠性。
• This paper utilizes the software matlab to program the each working volume . it helps to analyze the volume change curve . at the same time , comparison with combination profile compressor and single circle compressor is presented , with the result that combination profile compressor has the advantages of high efficiency , little leakage and high quotient of volume using
  论文运用matlab数学软件对新型组合曲线涡旋压缩机的各个压缩腔的容积进行了编程运算,对各个压缩腔容积的变化规律给出了几何直观的描述,并且对组合曲线压缩机和圆渐开线的压缩机进行了性能对比分析,证明组合曲线涡旋压缩机具有效率高、体积利用系数大等优点。