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major axis     
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     As the concentration of clay particle is 100mg/l,and NaCl is 40 000mg/L,the middle value of major axis of particle size increases up to 13.70μm and the minor axis up to 10.06μm.
     当体系中黏土颗粒浓度为100 mg/l时,NaC l浓度为40 000 mg/l时的颗粒长轴粒径中值为13.70μm,短轴粒径中值为10.06μm;
短句来源
     With the same concentration of clay particle,as CaCl_2 is 5 000mg/L,or Fe~(2+) is 100mg/L,the middle value of major axis of particle size increases up to 12.17μm or 12.53μm, and the minor axis up to(7.76)μm or 10.25μm respectively.
     CaC l2浓度为5 000 mg/l时的颗粒长轴粒径中值为12.17μm,短轴粒径中值为7.76μm; Fe2+浓度为100 mg/l时的颗粒长轴粒径中值为12.53μm,短轴粒径中值为10.25μm。
短句来源
     where as in the synovial fluid of the KOA the micro-particles in unit per contact area, perimeter, major axis, minor axis, particle number (/10000μm~2) are respectively to be 97.43μm~2、 40.70μm、13.42μm、8.19μm and 17, compare to the normal ones have significant variance (P<0.001) .
     KOA患者关节液颗粒体的平均接触面积、周长、长轴、短轴和单位面积(10000 μm~2)上的颗粒数分别为97.43 μm~2、40.70μm、13.42 μm、8.19 μm和17个,与正常人比较均有显着差异(P<0.001)。
短句来源
     The results obtained indicate that when the precipitation reaction temperature is 40℃, crystal transformation temperature 85℃, and the concentration of surface activity agent 0.1mol/l,the ultra fine iron oxide particle with major axis bemg 40-60nm,minor axis 10-15nm, can be obtained.
     在沉淀反应温度40℃,晶型转化温度85℃和表面活性剂浓度为0.1mol/l时,可得到长轴为40—60nm,短轴10—15nm的纺锤状超微粒子氧化铁。
短句来源
     Results: Multi-dimensional microscopy graphic analysis results shows that the micro-particles in unit per contact area, perimeter, major axis, minor axis, particle number (/10000 μm~2) are respectively to be 8.69μm~2、8.64μm、2.46μm、1.50μm and 34;
     结果:多维显微成像与分析结果显示,正常人关节液颗粒体的平均接触面积、周长、长轴、短轴和单位面积(10000 μm~2)上的颗粒数分别为8.69 μm~2、8.64 μm、2.46μm、1.50μm和34个;
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     Target Aspect Estimation in SAR Imagery Based on Hough Transform and Major Axis Extraction
     基于Hough变换与目标主轴提取的SAR图像目标方位角估计方法
短句来源
     At the frequency of 40kHz, the -3dB beamwidth of the vertical beam of the whole head is approximately 21.6, its major axis elevated 10 above the rostrum plane;
     在40kHz时整体头垂直波束—3dB束宽为21.6°,主轴相对于吻平面有10°仰角;
短句来源
     the -3dB beamwidth of the horizontal beam of the whole head is approximately 20, its major axis deviated 12 right-ward from the body axis.
     水平波束—3dB束宽为20°,主轴相对体轴右旋12°。
短句来源
     The beam current uniformity is better than ±6% along the major axis over 27 cm length at a distance 26 cm from the ion beam source.
     在束流为120mA时,距源26cm处,在主轴方向27cm的范围内不均匀性小于±6%。 该离子束源可作为大面积离子束刻蚀、离子束抛光等的离子束源。
短句来源
     There are some concept and concise conclusion about major axis, focus, directrix of conic in literatureP. 220-P.
     文献[1]P.220~P.225中给出了二阶曲线的主轴、焦点与准线的概念及一些初步的结论。
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  “major axis”译为未确定词的双语例句
     0±2.3 in major axis.
     其他品种为长球形,极轴为31.0±2.3μm。
短句来源
     Mean diameter at major axis of VSD measured on surgery was 9.28±3.19mm, which was excellently correlated with that measured by 3DTTE ( 8.82±2.92mm) (r=0.88, p<0.01) and well correlated with that measured by CDE (8.69±3.42mm) (r=0.65, p<0.01).
     VSD手术测值为9. 28±3. 19mm,与3DTTE测值(8. 82±2. 92mm)具有良好相关性(r=0. 88,p<0. 01); 与CDE测值(8. 69±3. 42mm)也具有良好相关性(r=0. 65,p<0. 01)。
短句来源
     The diameter of the major axis and minor axis of ACL was 19.32±2.42mm and 10.52±2.24mm, respectively, and the area of AMB bundles and PLB bundles was 69.37±20.2mm2 and 86.60±30.22mm2, respectively.
     ACL股骨止点的长径与短径分别为19.32±2.42mm与10.52±2.24mm,前内束和后外束股骨止点的面积分别为69.37±20.2mm2和86.60±30.22mm2,前内束股骨止点的面积略小于后外束;
短句来源
     hole size is 650 ̄700mm in major axis and 240 ̄250mm in minor axis;
     内孔宽度650~700mm,高度240~250mm;
短句来源
     The average major axis, minor axis and the disparityof the major and minor axes of the minimum transverse views of the stents were 1. 8±0. 22cm, 1. 5± 0. 6cm, 0. 3±0. 12cmrespectively, and the average ma jor and minor axes were different obviously.
     支架最小横断面的平均长、短径分别为1.8±0.22cm、1.5±0.6cm,长短径之差平均为0.3±0.12cm。
短句来源
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  major axis
At the phase plane "the longitude of the subsatellite point-semi-major axis" the regions of migration of separatrices where the separatrices can move due to the influence of perturbations are isolated.
      
The dimensions of these regions and the distances between them have the same order of magnitude, several kilometers along the semi-major axis.
      
Flow past an oblate ellipsoid of revolution aligned along the major axis
      
We found no evidence of gas rotation around the major axis of NGC 6286, which argues against the assumption that this galaxy has a forming polar ring.
      
We found no significant deviations from the circular rotation of the galactic disk in the velocity field in the regions of brightness excess along the major axis of the galaxy (the putative polar ring).
      
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The arch belly gravity dam is a new type of dam. Its upstream face is inclined and it has a belly arch within. The stress distribution of the dam section is comparatively uniform so that the strength of materials can be filly utilized; the vertical stress at the heel of the dam is comparative high so that the capability of the dam to sustain extraordinary overloading is high. .Comparing with ordinary gravity dam, its stress condition is greatly improved. In order to search for the best profile of new type...

The arch belly gravity dam is a new type of dam. Its upstream face is inclined and it has a belly arch within. The stress distribution of the dam section is comparatively uniform so that the strength of materials can be filly utilized; the vertical stress at the heel of the dam is comparative high so that the capability of the dam to sustain extraordinary overloading is high. .Comparing with ordinary gravity dam, its stress condition is greatly improved. In order to search for the best profile of new type of dam, stress experiments of more than twenty profiles of the dam section of different dimension have been performed by photoelastic frozen method. Through balance check of forces and repeated tests of recommened profiles, it has been proved that the results of the experimentals are believable. The stress condition of several profiles is also experimented with the net method of gelatin models. The stresses are also computed by structure theory with the profile assumed as a hingeless arch. The stresses obtained by the above three methods are approximate. Based upon the results of stress experiments, the effect of the change of dimension of the profile on the stress distribution has been studied. It is considered that the rule to determine the dimension is as follow: The slope of upstream face would be 1: 0. 2-1: 0. 4, and that of the downstream face 1:0. 75-1: 0. 9; the belly arch would be made elliptical with its major axis slightly inclined toward upstream; the arch would be -25--~35% as high as the dam; the upstream leg would be thicker than the downstream leg, so that the center of the gravity of the section would be slightly shifted to the upstream. If the arch belly are used as powerhouse of hydroelectric plant, the width of the draft tube would be equal to or less than 30% of the dam block. The results of stress experiments of the finally recommended profiles have shown that the stresses in the dam section are principal compressive, the stress distribution in the dam section is uniform, and the stress at the heel of the dam is higher. Take profile 1-Ⅷ as an example, compressive stresses occur in the whole section, except that at a few points tensile stresses of no more than 4 kr/cm2 are developed. The ratio of maxinum and mininum stresses in the section is less than 2. The vertical compressive stress at the heel of the dam is, greater than two times the head at the same point, so that the dam has greater capability to resist the overloading. It can be seen that the arch belly gravity dam is a noteworthy new type of dam

腹拱式重力坝是一种新坝型,坝上游面倾斜,坝内设有腹拱。坝体断面的应力分布比较均匀,坝体材料得到充分的利用,上游坝趾的垂直应力较高,坝体承受特殊超载的能力较大,比较一般砼重力坝的应力状态有了很大改善。为了寻找这种新坝型的最好轮廓剖面,利用偏光弹性力学的冻结应力方法,做了廿多组不同轮廓尺寸的坝体剖面的应力试验,经过平衡校核,对于推荐的剖面还进行了重复试验,认为试验结果是可信的。试验中个别方案还采用了软胶纲格法试验;并简化成无铰拱,用结构力学的方法进行了近似的应力计算。三种不同方法所得的应力情形是接近的。根据不同轮廓尺寸剖面应力试验的结果,分析了各种轮廓尺寸的变化对坝体应力分布的影响。初步认为确定坝体轮廓尺寸的规则如下:坝体上游边坡宜为:1∶0.2-1∶0.4,下游边坡宜为1∶0.75-1∶0.9;腹拱宜做成略向上游倾斜的椭圆形;拱高宜为坝高的25-35%;上游腿应比下游腿略厚,以使重心偏向上游;设置坝内电厂时尾水管的宽度宜等于或小于坝段宽的30%。最后推荐方案的应力试验成果,坝体基本上全部为压应力,坝体断面的应力分布均匀,上游坝趾的压应力较高。以1-Ⅷ号方案为例,坝内只个别点出现了最大为4公斤/厘米2的拉应力,?

In this paper, three topics are discussed.1. The thermal effect of the ocean on the atmosphere: Basing upon the distribution of surface sea temperature and the heat exchange between the saa and the atmosphere over the Kuroshio region in NW-pacific, the height of the transitional layer of the atmosphere acted by the ocean and the relation between the gradients of surface sea temperature and that of 1000-500mb thickness are investigated.2. The influence of the atmospheric circulation to the oceanographic circulation:...

In this paper, three topics are discussed.1. The thermal effect of the ocean on the atmosphere: Basing upon the distribution of surface sea temperature and the heat exchange between the saa and the atmosphere over the Kuroshio region in NW-pacific, the height of the transitional layer of the atmosphere acted by the ocean and the relation between the gradients of surface sea temperature and that of 1000-500mb thickness are investigated.2. The influence of the atmospheric circulation to the oceanographic circulation: The seasonal variations of the Kuroshio axis approximately are coincided with both that of the jet on 500mb and the major axis of subtropical high over the North pacific ocean. but, between the intensities of the Kuroshio and that of the atmosphric circulation, there are no definite relation to be found.3. The relation between the oceanographic circulation and the weather system over the North-West pacific ocean: In the region between the Kuroshio and the Oyashio, where the maximum surface sea tempera- ture gradient occurred there the frontal zone and the maximum fre-qucency of cyclone and sea fog are just produced, It seems that the activity of the weather systems are quite corresponded with the variation of certain oceanographic circulations.

本文从三方面探讨海洋环流与大气环流之间的对应关系。 1.海洋对于大气的热效应:通过北太平洋西部黑潮区水温分布及海洋与大气的热交换量,说明海洋可以影响到的大气高度;通过水温梯度分布找出其与1000—500mb厚度梯度分布的对应关系。 2.大气环流对于海洋环流的影响:根据黑潮轴线的季节变化,找出其与500mb西风急流和付热带高压轴线的活动是一致的协调的。黑潮强度与大气环流的对应关系并不明显。 3.西北太平洋海洋环流与天气系统:黑潮和亲潮邻接海区水温梯度最大,因而其上正是大气锋区所在,气旋最大频率区和海霧最大频率区均与海洋环流的活动息息相关。 从海洋环流与大气环流的对应关系中,指出海洋影响大气在温湿效应上,大气影响海洋在运动方面。但大气温湿属性改变了,必然引起空气运动。而海水运动产生了,也要引起温盐度的再分布。因而总的说来,海洋影响大气的直接作用为温湿效应,间接作用为空气运动。大气影响海洋的直接作用为海水运动,间接作用为温盐效应。

Formulae for checking the strength of propeller with aerofoil and circular back sections are derived on the basis of analysis and empirical data. In deducing the formula, the thrust and torque force distributions along the blade are calculated by using the theoretical method, while sinθ and cosθ are expressed as the function of H/D. δη, which is taken from the Troost's propeller design chart, is introduced, when torque force is transformed into thrust. Then all the functions connected with H/D are expressed...

Formulae for checking the strength of propeller with aerofoil and circular back sections are derived on the basis of analysis and empirical data. In deducing the formula, the thrust and torque force distributions along the blade are calculated by using the theoretical method, while sinθ and cosθ are expressed as the function of H/D. δη, which is taken from the Troost's propeller design chart, is introduced, when torque force is transformed into thrust. Then all the functions connected with H/D are expressed in a single function which is presented in the expression for calculating the stress due to moment of thrust and torque force (DPK_1)/(Zbe~2cos~2ε). In deriving the stress due to centrifugal force, the expanded contour of the propeller blade is assumed as ellipse, and the radius is taken as major axis, the maximum breadth as minor axis. It is tedious to calculate the moment arm of centrifugal force according to the accurate method, hence graphical method is used to derive the same. The approximate expression for the stress due to centrifugal force is as follows:D/e is taken as 26, which is introduced only in the calculation of centrifugal force. For ordinary propeller, D/e is about 22 to 30, hence the assumption of 26 will not seriously affect the accuracy. The revolutional speed is below 800 RPM, the centrifugal force needs not to be considered for the propeller without rake. Finally, the expression for the calculation of stress and blade thickness are given as follows: In comparison with Romsom's formulae, Norwegian Classification Society formulae and Papmil's formulae, we found that the Romsom's formulae will not give the root thickness directly, successive calculations are very often required; Norwegian Classfication Society formulae are not fit for compressive stress and also for the propeller of round back section; Papmil's methods are far too complex. The method suggested in this paper is comparatively simple and process of formulation is more reasonable.

根据理論分析法,結合經驗数据,分别推导出按拉应力或压应力的机翼型、弓型螺旋桨各强度校核公式与計算叶根处厚度公式。在推导过程中,推力分布与轉力分布系按理論計算而得,并把sinθ与cosθ轉化为H/D之函数。在轉力化为推力时引进了δ_η值,該值系按楚思德图譜而得并与H/D有关。然后将所有与H/D有关之函数加以归結,使推力矩及轉力矩产生之应力表达为十分簡便之形式DPK_1/Zbe~2cos~2ε其中K_1就是所有H/D之妇結。在推导离心力及离心力矩产生之应力时,系假定叶之伸張輪廓为椭圆形,其长軸等于螺旋桨之半徑,短軸为伸張叶之最大寬度,一般商船与軍舰螺旋桨皆大致如是,为专供計算离心力之用特假定叶面为一直线,叶背为拋物綫,叶边具相当厚度,等于叶梢厚度et,而該截面面积稍稍大于弦长及厚度相同之弓形截面,而略小于普通机翼型截面,但其差别有限。在計算离心力之矩臂时若接精确計算,則十分麻煩难于处置,因此系按作图方法求离心力之矩臂基础上进行推导,經过上述假定与分析可以写出近似公式如下:K_z_(?)+K_z_s=C_oω(A/A_d)(N~2D~3/Zb)[K_o+K_2]在推导厚度公式过程中,以D/e=26来处理而D/e这一...

根据理論分析法,結合經驗数据,分别推导出按拉应力或压应力的机翼型、弓型螺旋桨各强度校核公式与計算叶根处厚度公式。在推导过程中,推力分布与轉力分布系按理論計算而得,并把sinθ与cosθ轉化为H/D之函数。在轉力化为推力时引进了δ_η值,該值系按楚思德图譜而得并与H/D有关。然后将所有与H/D有关之函数加以归結,使推力矩及轉力矩产生之应力表达为十分簡便之形式DPK_1/Zbe~2cos~2ε其中K_1就是所有H/D之妇結。在推导离心力及离心力矩产生之应力时,系假定叶之伸張輪廓为椭圆形,其长軸等于螺旋桨之半徑,短軸为伸張叶之最大寬度,一般商船与軍舰螺旋桨皆大致如是,为专供計算离心力之用特假定叶面为一直线,叶背为拋物綫,叶边具相当厚度,等于叶梢厚度et,而該截面面积稍稍大于弦长及厚度相同之弓形截面,而略小于普通机翼型截面,但其差别有限。在計算离心力之矩臂时若接精确計算,則十分麻煩难于处置,因此系按作图方法求离心力之矩臂基础上进行推导,經过上述假定与分析可以写出近似公式如下:K_z_(?)+K_z_s=C_oω(A/A_d)(N~2D~3/Zb)[K_o+K_2]在推导厚度公式过程中,以D/e=26来处理而D/e这一因素仅考虑离心力矩所引起之应力方被引进。而离心力矩所引起之应力仅占总应力之小郭分,并且一般螺旋桨D/e=22~30左右,因此无疑D/e=26来处理对准确度影响甚微。当螺旋桨无后傾角时离心力部分引起之应力甚小,只有轉速在800轉/分附近时予以考虑。故可以写成更簡便之公式。弓形螺旋桨推导过程,与机翼型相若,最后可以相信不同截面形状之螺旋桨可写成如下表达形式: 1.校核公式:[σ]≥(DPK_1/Zbe~2cos~2)ε+C_oω(A/A_d)(N~2D~3/zb)[K)o+K_2) 2.e_(0.2)R的近似表达式(D/e=26轉化): 与J.A.罗姆逊(Romsom)公式,挪威船级社(Det Norske Veritas)算式,苏联巴甫米尔方法比較之后不难发現,罗姆遜公式不能直接求出叶接处之厚度,在强度校核中若发现材料应力不足时需反复計算。挪威船級社算式,不适用于压应力,也不适用于弓型截面螺旋桨,簡化过程比較粗糙。巴甫米尔方法計算过于麻煩,玥提出新的公式計算比較簡便,合理性也有所提高。

 
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