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We use the Taylor series expansion method to get the second-order approximate expression of the confidence region of the parameters, and then according to the principle of minimizing the volume of the confidence region, this paper carries out experimental design for the regression model, and then fixes the point range in the domain of definition of design variable for the model function so as to select the designing point, which can minimize the volume of the confidence region.
文章首先计算指数族非线性模型的回归参数β在1-α置信水平下的置信域的体积,为了便于计算,需把置信域投影到切空间中去,投影后的置信域是一个椭球体,用Taylor展开方法对此椭球体的体积进行二阶近似,推出原参数置信域的体积的近似表达式,然后对回归模型进行试验设计,根据置信域体积最小准则,在模型函数的设计变量的定义域上确定点列,选取使置信域体积达到最小的设计点。
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Stability, sedimentation value, water absorption and wet gluten content decided bread volume together, and the effects of them were weakened respectively from their direct effects on bread volume.
稳定时间、沉淀值、吸水率、湿面筋含量共同决定面包体积,它们对面包体积的直接作用依次减弱,沉淀值为面包体积的主要决策变量。
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The positive correlation between volume and count in coincident counting and negative correlation between volume and count in noncoincident counting indicate that the sample's volume effect should be considered in counting of 32P water solution.
结果显示符合测量中体积与计数效率呈正相关关系,非符合测量中体积与计数效率呈负相关关系。提示在进行此类测量时,为了保证结果的准确可靠,须保持样品体积的一致或选用样品体积不敏感区间。
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In this part, the densities of sodium benzoate, sodium nitrobenzoate, sodium chlorobenzoate and sodium methylbenzoate in DMFwater mixed solvents have been measured at 298.15K with an Anton Paar Model 55 densimeter. From these densities, apparent molar volumes and partial molar volumes have been calculated, transfer volumes from water to DMF-water mixtures and substituent contributions to the transfer volumes have also been obtained. Solvent and substituent effects are discussed in detail. The Scaled Partical Theory has been applied to the ternary solutions to evaluate the partial molar volumes of cavity formation and the volumes change associated with solute-solvent interaction.
选择了含有取代基团的芳香类有机电解质,主要是苯甲酸钠、硝基苯甲酸钠、氯苯甲酸钠和甲基苯甲酸钠的邻、间、对同分异构体作为研究对象,用DMA 55型振荡管密度计测定了它们在不同质量百分数组成的DMF-水混合溶剂中的密度,利用这些密度数据,计算了表观摩尔体积和偏摩尔体积,得到了这些单取代苯甲酸钠从水到DMF-水混合溶剂中的迁移偏摩尔体积及苯环上不同位置的取代基对迁移偏摩尔体积的贡献值,讨论了溶剂效应和取代基效应,并将定标粒子理论应用于此三元电解质溶液中。
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According to the energy conservation theory, BOM and CSIM4 were coupled. The BOM has no treatment on transmission solar radiation, which is of great importance when the model is adapted to Arctic Ocean. So the treatment was introduced to BOM. Through numerical test on different lead albedos, it was found that sea ice thickness is not so sensitive to lead albedo, which may be contribute to the lead occupies little ratio within multiyear sea ice pack. The reason of summer over-melt of arctic sea ice is the NCEP reanalysis downward solar radiation being larger than its reality. Then the arctic sea ice climate variability was simulated. Results showed that: simulated ice thickness change is in accord with the submarine investigated mean sea-ice draft changes. Simulated annually maximum ice thickness along the Eurasian continental oceans are closely related to the observed ones. The long-term mean simulated ice motion has the same features of the SSM/I derived ice motion. Sea ice extents in differential sub-regions have same trends comparing to the satellite passive-microwave data derived ones. Simulated ice concentration is closely related to the observed in the Arctic sub-regions. Sea ice flux through the Fram Strait involves ice concentration, motion and thickness. It is a composite criterion for sea ice model evaluation. The simulated ice area and volume export through the strait accord with the satellite derived or statistically reconstructed ones.(5) The simulated ice thickness climate variability and mean sea surface current of the coupled model were analyzed, results showed: the total ice volume in the Arctic Ocean has a significant decreasing trend. The volume variability is of a 10-year timescale oscillation, with two major periods of 12-13a and 18-20a. Mean ice thickness in the arctic sub-seas has different tendencies. It has an increasing trend in the Barents-Kara Sea and Baffin Bay-Labrador Sea, and decreasing in the others. The characteristic time scale of 7-10a wherein the river discharges leads the Fram Strait ice volume export is about the period that river water takes to be conveyed across the Arctic Ocean.(6) Using the simulated ice distribution in the Arctic Ocean and China precipitation, air temperature and SST in tropical key regions, the climate teleconnection were studied. Result showed: When the mean sea ice thickness is large in the central Arctic Ocean and Chukchi-Beaufort Sea , and small in the Barents-Kara Sea and Baffin Bay-Labrador Sea , the precipitation in South China, Tibetan Plateau, and the north part of Northeastern China are always smaller than normal, and v. v. When the mean ice thickness is small in CA, BC, East Siberian Sea and Greenland-Iceland-Norwegian Sea , and large in BL, The air temperature in north-eastern China, the southern of Tibetan Plateau, and Hainan Island, are always lower than normal, and v. v. In addition, when the sea ice is thick in BC and BL, the SST is larger in the middle and eastern Pacific Ocean, and is smaller in the tropical Southeastern Indian Ocean.
由于BOM没有考虑透射太阳辐射的物理过程,研究表明透射太阳辐射对北冰洋的能量收支起到重要作用,因此在BOM模式中引入了对透射太阳辐射的处理;通过对不同水道反照率的数值试验表明海冰厚度对水道反照率的敏感性不强,可能与海冰区水道面积占的比率很小有关;而模式模拟的北极海冰夏季&过度融化&主要源于NCEP再分析资料提供了偏大的太阳短波辐射;对北极海冰的气候变率进行了模拟研究,结果表明:模拟的海冰厚度变化与潜艇探测的海冰吃深度变化具有一致性;模拟和观测的亚欧大陆沿海的年内最大海冰厚度有很好的相关;模拟的海冰移速与长期平均的卫星反演的海冰移速具有相同的速度分布特征;模拟的各个海区海冰面积的变化趋势与卫星反演资料分析的结果基本一致;模拟与观测的主要海洋分区的海冰密集度具有很好的相关:弗瑞姆海峡的海冰体积和面积的输送涉及到海冰密集度、厚度和移动速度,是判断模式模拟能力的一个综合的指标,模式模拟的结果与卫星反演或重建的面积输送、体积输送具有很好的一致性;(5)分析了模拟的北极海冰厚度的气候变率及气候平均表层海流场,结果表明:北极海冰的总体积有显著减少的趋势,北极海冰总体积的变化具有10a际尺度振荡的特点,存在18-20a和12-13a两个主周期;北极海冰的平均厚度在各个海区的变化趋势不同,在巴伦支—喀拉海和巴芬湾—拉布拉多海地区海冰厚度有显著的增加趋势,而其它海区存在减少的趋势;通过对模拟的气候平均表层海流的分析表明,北极河流流量超前弗瑞姆海峡海冰流量7-10年的特征时间尺度与表层海流的气候分布存在着必然联系:(6)利用模拟结果以及中国降水、气温和热带关键区SST资料,讨论了北极各海区海冰平均厚度与中国降水、气温以及热带关键区SST的关系,结果表明:在北极中心海区和楚科奇—波弗特海海冰厚度偏大,在巴伦支—喀拉海以及巴芬湾—拉布拉多海海冰厚度偏小,则中国降水在华南地区、青藏高原和东北北部降水偏少,反之相反;在北极中心海区、东西伯利亚海、楚科奇—波弗特海以及格陵兰海海冰厚度偏小,在巴芬湾—拉布拉多海海冰厚度偏大,则在中国东北地区、高原南部地区和海南岛附近气温偏低,反之相反;另外,北极楚科奇—波弗特海和巴芬湾—拉布拉多海海冰厚度偏大时,在热带中东太平洋海温偏高,而在热带东南印度洋海温偏低。
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The eluents were water, 10%, 20 %, 30 % and 50 % ethanol respectively and they flowed through the macroporous resin one by one with five times of the column volume. The obtained eluent of 50 % ethanol was evaporated and the content of total flavonoids was 76 % measured by HPLC.
结果 选择AB-8大孔树脂;最佳纯化工艺为上样液总黄酮质量浓度 60 mg·L-1,pH 5.0,温度 25 ℃;最佳洗脱方式是用5倍柱体积的水及体积分数分别为10 %、20 %、30 %的乙醇依次洗脱,弃去洗脱液后再用5倍柱体积的体积分数为50 %的乙醇洗脱;HPLC法测定总黄酮的含量为76 %。
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Tz = 2Gk q 即 z = 2Gk q /T 40 Suppose the volume between membrane and the boundary plane is V, and we notice that 2 ∫∫ d x d y = M Then we have Thereby we have q qM V =∫∫ zdxdy =∫∫ dxdy = 2GTk 4GTk M 2 Gk = 2V q /T From τ zx =τ xz =, y z 2Gk τ zx /= y q / T τ z y =τ yz = x 41 Moreover, we get 设薄膜及其边界平面之间的体积为V,并注意到 2 ∫∫ d x d y = M 则有从而有由又可得 q qM V =∫∫ zdxdy =∫∫ dxdy = 2GTk 4GTk M 2 Gk = 2V q /T τ zx =τ xz =, y z 2Gk τ zx /= y q / T τ z y =τ yz = x 42 Adjust the pressure q of which the membrane is under, and make the rights of formulas,, equal to one, then we can gain some conclusions as follows:(1) The stress function of wringed pole equals to the uprightness angle of the membrane (2) The torsion M which wringed pole received equals to two times of the volume between the membrane and the boundary plane.
o b y a x 43 调整薄膜所受的压力q,使得,,三式等号的右边为1,则可得出如下结论:(1)扭杆的应力函数等于薄膜的垂度z。(2)扭杆所受的扭矩M等于该薄膜及其边界平面之间的体积的两倍。
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The mean doses to the left and right parotid of 30% volume were (31.1±3.48) and (31.4±3.80) Gy, respectively, which those of 60% volume were (20.7±2.68) and (20.8±3.91) Gy, respectively. The patients of the mean doses ≤26 Gy and ≤30 Gy to the left and right parotids were 35.3%(12 cases) and 23.5%(8 cases), 82.4%(28 cases) and 73.5%(25 cases) respectively.
结果:左侧腮腺的平均受照射剂量为(27.5±2.67)Gy,≤26Gy者占35.3%(12例)、≤30Gy者占82.4%(28例)、30%体积的平均受照射剂量为(31.1±3.48)Gy、60%体积的为(20.7±2.68)Gy;右侧腮腺的平均受照射剂量为(28.3±2.95)Gy,≤26Gy的患者占23.5%(8例)、≤30Gy的患者占73.5%(25例)、30%体积的平均受照射剂量为(31.4±3.80)Gy、60%体积的为(20.8±3.91)Gy。
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The bulk modulus describes volumetric elasticity, or the tendency of an object's volume to deform when under pressure; it is defined as volumetric stress over volumetric strain, and is the inverse of compressibility.
体积模量,描述了测定体积的弹性,或者说一个物料在压力作用下的体积相对于变形的程度;它被定义为体积应应变下的体积应力,且是体积柔量的倒数。
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Methods Bilateral spermatic veins and testis volume of 73 men with varicocele and 30 normal men were detected by Color Doppler Ultrasound,and analysed about the correlation between the spermatic vein diameter and testis volume,and the correlation of the bilateral spermatic veins;the volume change of left testis and diameter change of left spermatic vein of 23 men in the case were retrospectively analysed.
采用彩色多普勒超声对30例正常人及73例精索静脉曲张患者的双侧精索静脉及睾丸体积进行检测,分析双侧精索静脉内径之间、患侧精索静脉内径与睾丸体积之间的相关性;回顾分析其中23例患者左侧精索静脉内径及左侧睾丸体积的变化。
- 更多网络解释与体积的相关的网络解释 [注:此内容来源于网络,仅供参考]
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Change of State at Constant Volume:定体积的状态变化
2.5Various Kinds of Work 各种类的功 | 2.6Change of State at Constant Volume 定体积的状态变化 | 2.7Enthalpy and Change of State at Constant Pressure 定压的状态变化与热焓
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Face cord:面积考得(木材体积的一种标称)
extract 浸提物,萃取物 | face cord 面积考得(木材体积的一种标称) | face crossing 表面直交单板
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A pathological toy, each chunk rigorously:一个病理学的玩具,每一个单位体积的残酷的肉块
A convened effigy 一个被传唤的模拟... | A pathological toy, each chunk rigorously 一个病理学的玩具,每一个单位体积的残酷的肉块 | Inter mortis locking, as you pathogenically rot 埋葬,加固,加锁,当你得了病原...
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load per unit of volume:单位体积的含量
load per unit of mass 单位质量的含量 | load per unit of volume 单位体积的含量 | loading 负荷; 浓度; 含量
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equivoluminal:等体积的
equivoluminal wave 等体积波 | equivoluminal 等体积的 | FCV 空柱体积
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isopycnic:等密度线;等体积的
isometric block diagram 等体积的块状图 | isopycnic 等密度线;等体积的 | isovol map 等体积图
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volumetric:体积的
volume shrinkage 体积收缩 | volumetric 体积的 | volumetric analysis 容量分析
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volumetric:测定体积的
volumeter 体积计 | volumetric 测定体积的 | voluminous 很多的
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voluminal:体积的
voluminal compressibility 体积压缩性 | voluminal 体积的 | VPR 泵的冲程体积
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voluminal:体积的/容积的
volumette /重复定量滴管/ | voluminal /体积的/容积的/ | volumination /菌体肿胀/