查询词典 beam

The electron beam current measured by the beam current monitor(BCT3) is almost in direct proportion to the induced voltage of the fundamental harmonic.When the parameters of the pre-buncher and buncher are adjusted greatly while the beam current being unchanged,the fifth harmonic signal has a great change,but the fundamental signal changes gently.

根据不同时刻的记录，基频腔峰值电压与束流流强探测器BCT3所测流强值近似成正比关系；当大幅改变预聚束器和聚束器参数而束流流强不变时，反映聚束质量的五倍频腔信号也随之大幅改变，而反映流强信号的基频腔信号则变化不大，这些试验结果与理论分析完全一致。

This paper puts forward that making the openings of castellated beam s rounded rectangular can avoid the corner stress centralization of the hexagon castellated beam and the expansion rate loss of the round castellated beam .

提出将蜂窝梁孔洞做成角部修圆的矩形，可以避免六边形孔蜂窝梁的孔角应力集中和圆孔蜂窝梁的扩张比损失。

This paper give two reinforcement methods of the circular hole castellated beam-castellated beam with full-web extremity and castellated beam reinforced by transverse stiffeners.

提出了两种蜂窝梁的补强方法——端部实腹蜂窝梁和孔边设置横向加劲肋。利用AN SY S程序分析补强前后的圆孔蜂窝钢梁，得出端部实腹梁的受力性能优于设置横向加劲肋的梁的结论

During the calculation of the finite element method, the beam element is extended and three types of truss element is induct into the beam element.lt makes the framework and the consecutive beam uniform.lt avoids the waste of the EMS memory space that the general rigid array is kept by the method of the constringent one-degree storage.

在有限元计算中对梁元进行了扩充，将三类桁架单元引入到梁元中。实现了框架和排架以及连续梁单元刚度矩阵的统一。同时对总刚阵存储中利用了一维压缩存储的方法，减少了许多空间。

Through block wall experimental study we can find out that cracks would appear late and the load of crack-resisting and limit-resisting are increased obviously by the constructional measures in the wall. It is very effective method that the splayed cracks are controlled by sill ring beam, the horizontal bending cracks are controlled by structural column on the side of the wall and the horizontal cracks on the top of the wall are controlled by the whole ring beam. It is the most effective method that wall cracks are controlled by structural column, crout column and sill ring beam.

通过试验主要得到在墙体中采取构造措施后，墙体裂缝推迟出现，开裂荷载和极限荷载都有很大程度的提高，同时发现窗台圈梁在控制窗角的八字缝、墙体两侧构造柱对于防止水平弯曲缝以及全截面的圈梁在防止墙体和圈梁交界处的裂缝的出现能起到很好的效果，通过试验确定在砌块墙体中采取&构造柱+芯柱+窗台圈梁&的构造措施来控制裂缝是最为经济合理有效的。

Based on 3D steady and incompressible N-S equation and k-ε turbulent model, the aerodynamic performance of three different design options of 160 km/h container flat wagon was analyzed and compared using finite volume method. The three design options are as follows: the first design option has no headwall and the side surface of side beam is flat; the second and the third both have headwall and high side beam, and the side surface of side beam of the second is obtuse, while the third is cambered.

基于三维、不可压、定常N-S方程和k-ε双方程湍流模型，采用有限体积法对3种不同设计方案在运行时速为160 km/h的集装箱专用平车在有、无横风情况下的气动性能进行分析与比较，其中：方案一的平车无端墙，侧梁侧面平直；方案二和三的平车均加有端墙，且侧梁加高、侧面形状分别为钝形和弧形。

Based on 3D steady and incompressible NS equation and kε turbulent model, the aerodynamic performance of three different design options of 160 km/h container flat wagon was analyzed and compared using finite volume method. The three design options are as follows: the first design option has no headwall and the side surface of side beam is flat; the second and the third both have headwall and high side beam, and the side surface of side beam of the second is obtuse, while the third is cambered.

摘 要：基于三维、不可压、定常 N S 方程和 k ε双方程湍流模型，采用有限体积法对3种不同设计方案在运行时速为160 km/h的集装箱专用平车在有、无横风情况下的气动性能进行分析与比较，其中：方案一的平车无端墙，侧梁侧面平直；方案二和三的平车均加有端墙，且侧梁加高、侧面形状分别为钝形和弧形。

We have proved experimentally and theoretically that OBNC PM is more interesting than collinear PM in OPA and OPO due to its two characteristics: noncriticality for the noncritical beam and collinearity of the propagation directions of energy of the noncritical beam and pump beam in the crystal.

OBNC过程中作用光波中的一个光束与所产生谐波光束是非临界的，并且它们的能量流方向是一致的；OBNC具有很大的容限角，而其匹配条件比共线匹配过程宽容得多，从而可以使现有的多种非线性光学晶体通过OBNC获得比共线情况更有效的非线性作用。

Ponderomotive force of laser beam propagating in plasma could become stronger as the intension of laser beam strengthening , and in fluid mechanics ponderomotive force is related to implicate term, so implicate term could become stronger as laser beam's strengthening and couldn't be ignored.

当在等离子体中传播的激光脉冲达到一定强度时，有质动力会变得比较强。而在流体力学方程中有质动力一项与牵连项相关。因此当激光达到一定强度的时候，流体方程中的牵连项也会变得比较强，不可以被忽略。

Since the strong ground clutter processing residual on the low beam position caused by the sequential scanning of the beam in radar elevation is used as ground clutter and it appears in high beam position skippingly,this will affect radar normal dete.

由于这种雷达俯仰面波束的时序扫描而产生低波位的强地物回波处理剩余，作为地物杂波在高波位时跨周期出现，影响雷达系统正常的检测与显示，为解决此问题文中提出了一种比较有效的处理方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了