单词	贝塔斯
释义	贝塔斯Baetas
随便看	mechanical automatic frequency mechanical automation mechanical axis mechanical back to back test mechanical back-to-back test mechanical backup mechanical balance mechanical balance system mechanical balance type mechanical balancing mechanical bandspread mechanical bank mechanical barrier mechanical behavior mechanical bias mechanical bilge block mechanical binding mechanical birefringence mechanical bond mechanical booster pump mechanical brain mechanical brake mechanical brake mechanical brake equipment mechanical brake of hydro unit