查询词典 aerodynamic

Analysis one-way aerodynamic and strength fluid-solid interaction of an unshrouded centrifugal impeller blade under different conditions.

采用非结构化网格有限体积法和有限元方法，进行了不同工况半开式离心叶轮叶片单向气动与强度流固耦合分析。

Finally three-dimensional aerodynamic calculation for vaned diffuser is performed.

最后完成了带叶扩压器的三维计算。

After main parameters of impeller and casing are optimized using the numerical predictions of aerodynamic performance, the size of the vaneless diffuser and the relative place between the impeller and casing are optimized to decrease the friction loss.

利用气动性能数值预估对叶轮和蜗壳的主要参数进行优化后，再对无叶扩压器的大小和叶轮与蜗壳的相对位置进行优化，减少摩擦损失，最终得到的后向通风机测试结果，全压和效率均提高了11％。

The aerodynamic carbon-fibre bodywork of the Venturi Volage was styled by Sacha Lakic, and lies an aluminium and composite material chassis which is both light and strong.

气动碳纤维车身的文丘里式电压是由萨沙拉基奇，和谎言的铝和复合材料的底盘是轻型和强大。

Rna - Rns, see "Partitioning of net radiation", for multiple plants the fraction of radiation to each plant is calculated in the radiation section, see "Partitioning of radiation between plants", es is the vapour pressure at saturation, ea is the actual vapour pressure,ρa is air density, cp is the specific heat of air at constant pressure, Lν is the latent heat of vaporisation,Δ is the slope of saturated vapour pressure versus temperature curve,γ is the psychrometer "constant", rs is an "effective" surface resistance and ra is the aerodynamic resistance.

潜在蒸腾量 Etp 根据Monteith(1965)给出的彭曼联合方程形式计算：式中： Rn 为对于蒸腾的有效净辐射量(也就是 Rna - Rns ，见&净辐射划分&-Partitioning of net radiation，对于多重植被，每一株植物的辐射比率的计算见辐射一节的&植物间的辐射划分&Partitioning of radiation between plants)； es 为饱和水气压；ea 为实际水气压；ρa 为空气密度； cp 为常压下的空气比热；Lν为汽化潜热；Δ为与温度曲线饱和水气压关系曲线斜率；γ为干湿球湿度计&常数&；rs 为&有效&表面阻力；ra 为气动阻力。

Results showed that:(1) soil loss from plough tillage was as much as 3~8 times that from no-tillage; the aerodynamic roughness lengths under plough and no-tillage were 0.032, 0.417, respectively.(2) No-tillage soil contained more clay and fine sand in the 0-10cm topsoil layer than the plough tillage soil. In the 0-5 and 5-10cm soil depth, the bulk density, soil hardness and soil moisture were more under no-tillage than plough tillage. Especially, the soil hardness in 0-5, 5-10 and 10-20cm under no-tillage were as much as 4.7, 2.8 and 3.8 times, respectively.

研究结果表明：翻耕农田土壤风蚀量是免耕地的3~8倍，翻耕地和免耕地的地表粗糙度分别为0.032和0.417；与翻耕地相比，免耕地表层0~10cm土壤粘粒和粉粒含量较多；免耕地土层0~5cm和5~10cm的土壤容重、坚实度和土壤水分都大于翻耕地，其中0~5cm、5~10cm和10~20cm土层土壤坚实度分别是翻耕地的4.7、2.8倍和3.8倍。

The track places low demands on brakes and engines (only 61 percent of the lap is at full throttle), but a premium on aerodynamic efficiency and good handling balance.

他们中的一些已经完成了6000公里的练习，赛地对刹车和引擎的要求不高（一圈之中只有61%需要以全速行驶），但却对空气动力学的功率和控制平衡有额外的要求。

The composite article as recited in claim 13 contoured to a blade aerodynamic profile.

综合文章作为背诵，在索赔13等高，以刀片的气动的个人资料。

Under his leadership, the Megane and Scenic got sportier, aerodynamic grills and curvier trunks, and became Renault's most popular line, accounting for more than one-third of the company's auto revenue in 2002. In 2004, Mr. Ghosn sent Mr.

在他的领导下，Megane和Scenic品牌的汽车配上了更具运动感和符合空气动力学的格栅，以及更富流线型的车尾厢，从而成为雷诺最畅销品牌，其销售收入在雷诺2002年的汽车销售总收入中超过三分之一。

A method is presented for calculating complex aerodynamic interference between grid fins and bodies,bodies and engine s,frustums and cylinders.

本文给出了栅格翼和机身、机身和发动机以及机身的台阶与其前后柱体等复杂气动力干扰的计算方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。