准平面 meaning in English

directing plane
director plane
directrix plane

Quasi plane stress
准平面应力
It presents a new method for the system calibration in pmp . with a special calibration gauge , both the phase - height mapping and lateral coordinates calibration could be done simultaneously through only one measurement
校准时需要将校准平面进行多次平移，每次平移都需要进行一次测量，而且校准过程中需要保持标准平面的稳定，这些特点限制了便携式测量系统的开发。
Two type microwave bandpass filters are applied to meet different bandwidth requirements . the filters of the 2 % relative bandwidth is realized by ^ / 4 coupled waveguide filters , whereas the ones of 1 % relative bandwidth utilizes e - plane septum mounted in the wavefuides . very compact diplexers are achieved by different configurations individually
根据不同的设计指标，作者提出了两种双工器模型：波导分支滤波器双工器和准平面e面波导双工器；并且选用不同的滤波器形式来实现通道滤波器：用4耦合波导滤波器设计出相对带宽为2的窄带滤波器，而相对带宽仅为1的极窄带滤波器是采用过正面滤波器来实现的。