半圆形光谱仪
semicircular spectrometer
semicircular spectroscope
变截面圆形管道
circular cross-section tube with constriction
矩形-圆形波导转换器
rectangular-circular waveguide transducer
无芯平面圆形螺旋电感
cureless planar circular spiral inductor
印制板无芯平面圆形螺旋电感线圈
PCB coreless planar circular spiral inductor coils
圆形光波导
rotundity optical waveguide
圆形光阑透镜
circular lens with finite aperture
圆形光学波
circular optical waveguide
大曲率球面面形检测
Testing of large curvature spherical surface