英语词汇“principal period”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	principal period
释义	principal period 主周期
随便看	hard schedule hard science hard-science Hard Science fiction hard sciences hard scientist hard scope hardscrabble hard scrabble hard-scrabble hardscrabbler hard-scrabbler hardscrabblest hard-scrabblest hard script Chinese input pad Hard scrubbing of the skin hard seal hard sealing hard seam hard seat hard-seat hard-seat coach Hard seats on a train hard seat ticket hard sector