词汇	bumping post
释义	bumping post 挡柱
随便看	optical mark reader paper Optical Mark Reader Sheet optical mark reading optical mark recognition optical mark recognitionOMR optical mark revision optical mark scanning optical mark sheet optical maser optical maser action optical maser altimeter optical maser oscillator Optical Maser Radiation Weapon optical masers Optical Maser System optical maser wavelength optical mask optical masking optical mask stepper optical mass optical mass memory optical mass storage optical master optical matched filter optical matching