词汇	遗牍
释义	遗牍 yí dú指前人遗留下来的信件。遺牘
随便看	variable-speed wind power generation variable speed wind power trait variable speed wind turbine Variable speed wind turbines Variable-speed wind turbines variable speed with changeable frequency variable spilling variable spindle speed variable spray variable spraying variable spread variable spread factor variable spring variable spring hanger variable squirrel variable squirrels Variables reordering variables sampling variables select variables selection variables separate equation variables separation variables system variablest variable stability aircraft