Measures to prevent concentrated loading on front part of underframe in two legs hydraulic powered support--Application of offset valve in hydraulic power system of hydraulic powered support是什么意思_Measures to prevent concentrated loading on front part of underframe in two legs hydraulic powered support--Application of offset valve in hydraulic power system of hydraulic powered support在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句