词汇	凭由
释义	凭由 píng yóu官府发给的凭证。憑由
随便看	mechanical division mechanical dominance Mechanical dormancy mechanical dotter mechanical dotter graver mechanical double seals mechanical downtime mechanical draft mechanical draft air cooled condenser mechanical draft cooling mechanical draft cooling tower mechanical-draft cooling tower mechanical drafting mechanical draftsman mechanical-draft water-cooling tower mechanical draft wet cooling tower mechanical drainage mechanical draught mechanical draught cooling tower mechanical draught cooling to wer Mechanical draughtsman mechanical drawing mechanical-drawing Mechanical drawing and CAD Mechanical drawing course