障碍衍射over: This hat cost over £5. ...obstacle: n. 障碍(物),妨害,阻碍,干扰。 an obstac ...obstacle diffraction: 障碍绕射obstacle diffraction loss: 障碍绕射损耗diffraction over ridge: 刃形绕射下载手机词典可随时随地查词查翻译