英语词汇“pit-run gravel ballast”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	pit-run gravel ballast
释义	pit-run gravel ballast 坑砾道碴,未筛砾石道碴
随便看	beam current lag beam-current-lag beam current limitation beam current limiter circuit beam current modulation beam-current modulation beam-currentmonitor beam current monitor beam-current monitor beam -current monitor beam current saturation effect beam currnet beam curve beam cutoff beam cut-off beam cut-off voltage beam cutter beam cutting machine beam damage beam decay rate beam decentricity beam-defining aperture beam defining clipper beam defining diaphragm beam-defining diaphragm