Artificial intelligent assistant

H

H
/eɪtʃ; etʃ/ abbr
缩写 = (of lead used in pencils) hard (指铅笔中的铅心)硬的
    an H/an HH/a 2H pencil 硬度为H[HH/2H]的铅笔. Cf 参看 B, HB.

牛津英汉双解词典

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