查询词典 center field

Two problems were solved in numerical calculation, one was that a term of 1/r in Maxwell was divergence in cylindrical center where r=0, another was that the value of optical field at cylindrical center was difficult to decided when the cylindrical center set as a boundary condition in Maxwell equation, So the values of optical field need just calculate from cylindrical center to cylindrical boundary, comparing from cylindrical boundary to cylindrical boundary, near upon half CPU time and RAM saved.

计算中解决了在圆柱中心线上Maxwell方程存在发散项1/r以及用圆柱中心线作为边界条件时，中心线上光场值难确定的问题，因而光场只需从圆柱中心计算到圆柱边界，和以圆柱的两条边做为边界条件比较，节省了将近一半的计算时间和计算机存储空间。

In order to analyze the influence of the center air pipe diameter change on the combustion effect, numerical modeling was applied to numerical calculation on the temperature field of such type of boiler,through which temperature field in five different schemes were obtained. In addition, the influence law of change of the diameter of the center air pipe on the temperature field was analyzed. The temperature of the nearly-back wall region takes on a firstly decreasing and then increasing change with the diametrical decrease of the central wind pipe.

为研究改变中心风管直径后的4层燃烧器对炉膛燃烧的影响，采用数值模拟的方法对该型锅炉炉内的温度场进行数值计算，得到5种不同方案下该型锅炉炉内的温度场分布，并分析了中心风管直径的改变对炉内温度场的影响规律，即后墙近壁区温度随着中心风管直径的减小呈现先降低后升高的趋势。

And the perfect Q-vector was applied to diagnose a heary rain process for August 3～5, 1996. The results showed that there were more advantageous using the perfect Q-vector, and suggested that the perfect Q-vector could clearly reveal the system development of the heary rain; the divergence center or line, the divergence field and the frontogenesis function field of the perfect Q-vector could be used to locate the heary rain area; the center magnitudes of the perfect Q-vector divergence field and the frontogenesis function field could be signified the intensity of the heary rain.

结果表明，完全Q矢量能较清楚地揭示暴雨天气系统的演变；考虑了湿过程的完全Q矢量在暴雨的诊断过程中显示了其更大的优越性；定性而言，完全Q矢量散度的辐合中心或辐合线、散度场和锋生函数场有助于确定暴雨的落区，暴雨区正好落在低层完全Q矢量散度场辐合中心和锋生函数场正值中心之间；定量而言，低层完全Q矢量散度场辐合中心和锋生函数场正值中心大小对暴雨强度有显著的指示作用。

Main research results are as follows:The distribution of electromagnetic field in inductor goes sameness when imposing high frequency magnetic field and intermediate frequency magnetic field where the magnetic flux density is symmetry along the center of inductor height and in which the distance from the center of inductor is further, the magnetic flux density is stronger.

主要结论如下：感应器通入高频电流和中频电流两种情况下，感应器内部的磁场分布趋势相同，感应器内部的磁感应强度沿感应器高度中心对称，半径越大的位置，磁感应强度越强。

Drew led off the eighth inning with a hard ground ball up the middle. The ball eluded Felix and then scooted past the diving Lopez, rolling into center field.

Drew第八局的一记强劲中间滚地球，这球穿过投手，经过赶来拦截的Lopez，最后到中外野。

Houston Astros : The next two teams, ranked Nos. 29 and 28 in leadoff OBP, are going with newcomers in center field, speedsters who might swipe 60 bases apiece. But they can't steal first base.

休士顿太空人：接下来的两支球队上垒率分别排名29与28，他们拥有新的中外野手，这些有速度的选手也许能盗垒成功60次，但是他们无法盗一垒。

NONE American baseball player. One of the greatest sluggers of the game, he played center field for the New York Yankees (1951-1968) and hit 536 home runs.

曼特尔，米凯·查尔斯：(生于 1931)美国棒球运动员，是最伟大的棒球击球手之一，他担任纽约扬基队中场（1951-1968年），曾击出536个本垒打

The ball is pointed toward third base instead of toward center field, lessening the amount of torque on his arm.

掌握在手上的球是面对三垒的方向而不是中外野的方向，这是为了减轻他手臂扭力的负担。

When play is resumed, Yankee pitcher Ron Guidry is in center field for the final out of the top of the ninth while lefthanded first baseman Don Mattingly is at second.

当比赛恢复，洋基棒球投手罗恩guidry是在中心场，为最终出前的九届而左手职棒12 ，是在第二次。

The results show that the smooth guide data can make the target situate in the photoelectric theodolites center field of view,and supply the referenced data for other equipments.

试验结果表明，该方法快速提供的平滑引导数据，不仅能准确将目标引入光电经纬仪的视场，亦可为其他测量设备提供参考数据。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。