单词	autocollimator
释义	autocollimator noun au·​to·​collimator " + plural -s : a telescope with eyepiece adapted to the method of autocollimation either to collimate the instrument itself or to ensure that its axis is perpendicular to a reflecting surface Word History Etymology aut- + collimator First Known Use 1903, in the meaning defined above
随便看	portamento portamentos portance portances portapack portapacks portapak portapaks portas portatile portative portative organ portato portcrayon portcullis portcullis money portcullises Porte porte cochere porte cocheres porte-monnaie ported portefeuille portend portended

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