波纹喇叭与光壁多模喇叭是两种比较理想的高效率馈源。
Corrugated wall horns and smooth wall multimode horns are two comparatively ideal feeds with high efficiency.
导出了介质环加载波导与光壁波导连接处的模转换计算公式。
This leads to transformation formulas for the connecting boundary of the dielectric ring loaded waveguide and smooth walled waveguide.
筛分子内有较丰富的线粒体、P 型质体，有些筛分子有珠光壁。
The SEs were rich in mitochondria, P type plastids, and some SEs had nacreous wall.
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