障礙衍射over: This hat cost over £5. ...obstacle: n. 障礙(物),妨害,阻礙,干擾。 an obstac ...obstacle diffraction: 障礙繞射obstacle diffraction loss: 障礙繞射損耗diffraction over ridge: 刃形繞射下載手機(jī)詞典可隨時隨地查詞查翻譯