单词 | pitch block |
释义 | Definition of pitch block in English:pitch blocknoun ˈpɪtʃ blɒk
OriginLate 19th century; earliest use found in Edward H. Knight (1824–1883), patent lawyer and expert in mechanics. From pitch + block. Definition of pitch block in US English:pitch blocknounˈpɪtʃ blɒk
OriginLate 19th century; earliest use found in Edward H. Knight (1824–1883), patent lawyer and expert in mechanics. From pitch + block. |
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