查询词典 helical

Being associated with three research projects, this dissertation makes deeply insight into the fast and accurate analysis, optimal design and manufacture of HF and VHF/UHF broadband omnidirectional miniature loaded wire antennas, loaded helical antennas and multiple-tuned VLF inverted L valley span antennas.

本文密切结合&十五&国防预研项目&软件无线电天线&和&宽带小型化天线&以及国防重点项目&某长波台发信天线电气参数分析与设计&等项目，研究了短波和超短波频段上的宽频带加载线天线、加载螺旋天线和超长波倒L形多路调谐山谷天线的快速精确分析、优化设计以及样机制作。

On the theory of real-time CGH, using LCD, spherical and helical wavefronts are produced real-time, and compared with wavefront whose CGH is recorded by film. An aspheric is tested with real-time CGH.

运用实时计算全息技术，采用液晶板，实时产生了球面、螺旋面波前，经与胶片记录的计算全息图对应比较，其结果良好；并进行了实时计算全息测量非球面的实验。

The main products are: R, S, K, F series helical gear reducer, H / B series of high-power reducer, RV Worm Gear series by plane, WP series of cast iron worm reducer, MB-CVT, WB / X series - Cycloid reducer, T series of spiral bevel gear steering gear, G-wide series of closed gear reducer, SWL series screw lift series.

主要产品有： R、S、K、F系列斜齿轮减速机、H/B系列大功率减速机、RV系列蜗轮蜗杆减机、WP系列铸铁蜗轮减速机、MB无级变速机、WB/X系列摆线针轮减速机、T系列螺旋锥齿轮转向器、G系列全封闭齿轮减速机、SWL系列丝杆升降机等系列。

In Chapter 4, the Thwaites＇s method for 2-D laminar boundary layer and the Truckenbrodt＇s method for 2-D turbulent boundary layer are developed to solve the"quasi-3-D"equations for the 3-D boundary layers on rotating helical blades, and a integral method, which can be solved by iteration, is resulted.

在第4章中，计算二维层流边界层的Thwaites方法和计算二维湍流边界层的Truckenbrodt方法被推广用以解关于旋转螺旋面上三维边界层的&准三维&方程，得到一种可迭代求解的积分方法。

Objective To study the value of multislice helical CT multiplanar reformation to the display of facial nerve canal and the diagnosing of facial paralysis.

目的 探讨多排螺旋CT对面神经管显示能力及其在周围性面神经麻痹诊断中的应用价值。

Effect of different tubes on the heat transfer and flow resistance performance of oil cooler with coronal fin tube s supported by helical baffles was studied in this paper.

通过实验研究了不同结构参数的螺旋折流板冠形翅片管油冷器，获得了油冷器的传热与阻力性能曲线。

The absence of reflexions on or near the meridian immediately suggests a helical structure with axis parallel to fibre length .

在经络线没有反折表明它是一个与纤维长相平行的螺旋结构图像1。

With regard to the question how to cut the helical camber of screw-pump and spiral rod drilling tool in the field of petroleum machine and chemical machine, this paper firstly puts forward the cutting method how to apply the milling with non-instantaneous-pole envelope principle with plate milling cutter in our country.

本论文针对石油、化工机械领域螺杆泵、螺杆钻具转子的螺旋曲面切削加工问题，在国内首次提出了应用盘铣刀的无瞬心包络铣削加工方法。

Firstly, the formulas of continuous profile curves are educed from the formulas of the cutter profile curves, so the profile of helical gears can be fast and accurately created.

修形技术对提高齿轮箱传动性能有重要意义，而齿面偏差和轴线偏差是对齿轮强度产生影响的误差因素。

However, a disadvantage of worm gearing is the high sliding velocities across the teeth, the same as with crossed helical gears.

但是，不利的环面蜗杆传动是高滑动速度全国牙，同时由于带交叉斜齿轮。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。