单词	半月膜
释义	半月膜Semilunar membrane
随便看	directional comparison relay directional comparison system directional component directional confusion directional control directional control circuit directional control valve directional control valve (hydraulic) directional control valve (pneumatic) directional control valve，selector directional cooling directional--cooling directional correlation directional counter directional--counter directional coupler directional-coupler attenuator directional coupler--dc directional coupler-- directivity of directional coupler input and output matching directional-coupler input and output matching directional coupler modulator directional coupler--switch directional coupler-- y directional coupler， aperture copuling