查询词典 tapered

The formation mechanism of the absolute instability and gyrotron backward wave oscillations is analyzed, and the methods to suppress the parasitical modes are discussed.The nonlinear theory model of gyro-TWT is consummated by considering the influence of tapered magnetic field and waveguide radius, electron velocity spread, and waveguide loss on electron beam-wave interaction. The large-signal characteristic of gyro-TWT, such as launching loss and absolute instability, are also analyzed in detail. This work establishes the foundation for the development of a gyro-TWT amplifier.

重点研究了两段损耗波导结构和损耗陶瓷结构回旋行波管中的电子注-波互作用，分析了绝对不稳定性和回旋返波振荡的形成机制和抑制寄生模式的方法；完善了回旋行波管的非线性理论模型，并考虑了磁场和波导半径渐变、速度零散、波导损耗等因素对注-波互作用的影响；详细分析了发射损耗、相位稳定性等回旋行波管的大信号特征，为回旋行波管放大器的研制奠定了基础。

The profile of the Acadia is sleek and aerodynamic, with a sporty, tapered roof line.

阿卡迪亚的文件是光滑和空气动力学，与运动，锥形的车顶线。

A tapered incident wave is used to reduce the truncated error. The angular correlation function is calculated by Monte-Carlo generated rough surface, the enhancement on nonmemory line of the ACF can be used to detection a target placed over or under the rough surface.

在散射目标存在时，目标与粗糙面的复合多次散射场的角相关函数，在不满足记忆线条件下也有普遍较高的角相关函数值，即在非记忆线上的增强可以用于检测粗糙面上方、下方的散射目标。

Double row tapered hole cylindrical roller bearings with inner ring and shaft are tapered 1:12, bearing lock nut with a round led a bearing in the axial displacement of the inner ring bearings and expansion, to reduce or eliminate Bearing radial clearance purposes.

圆锥孔双列圆柱滚子轴承的内圈和配合轴径均为1：12圆锥，用圆螺母锁紧轴承则使轴承在轴向产生一个位移并使轴承的内圈膨胀，从而达到减少或消除轴承径向游隙的目的。

In the design of radial internal clearance for four row tapered roller bearing with tapered bore,Finite Element Analysis method is used to analyze and calculate the expanding difference between inner rings resulting from interference fit.

在圆锥孔四列圆锥滚子轴承径向游隙的设计中，利用有限元分析方法对过盈配合而导致的内圈膨胀量的差异进行了分析、计算，得到了该类轴承的各列径向游隙相互差，为轴承的游隙设计提供了依据。

Several such tapered slot antennas were arranged radially to form a circle, and a group of PINs was put at their feed lines. With the proper sequence switch of PINs, these tapered slot antennas can be constructed into an equivalent omnidirectional antenna.

将几个这样的渐变缝隙天线以放射状构成一圈，并在它们的馈线上引入一组PIN开关，以适当的时序控制PIN开关依次切换，可构成一种等效的全向天线。

Wood screws are tapered,and self-tapping screws have tapered ends and a variety of special points.

木材螺丝钉被逐渐变小，而且自我轻打的螺丝钉已经逐渐变小结束和多种特别的点。

Wood screws are tapered,and self-tapping screws have tapered ends and a variety of special points.

木螺钉是锥形，和自攻螺丝已逐渐结束，各种特殊points。

Comparing with conventional 1×7 mixing rod plastic optical fiber coupler using tapered mixing rod, 1×7 CMRC uses cylindrical POF as mixing rod instead of tapered POF thus eliminate the high demanding POF tapering process and lower the production cost.

由于安装成本在局域网总成本中占有相当大的比重，塑料光纤要在连接密集的局域网中取得显著的性能价格比优势，就需要有高性能价格比的光纤连接器和耦合器[2 ，3] 。

The concentric tapered pipe/reducing socket is advantageous to the fluid flow, in changes the diameter time is small to the fluid fluid state's disturbance, therefore the gas and vertical mobility's liquid pipeline use concentric tapered pipe changes a diameter.

同心异径管/大小头有利于流体流动，在变径的时候对流体流态的干扰较小，因此气体和垂直流动的液体管道使用同心异径管变径。

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