serration
n.
鋸齒狀；鋸齒形；鋸齒狀突起
英語(yǔ)翻譯 Noun:
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the condition of being serrated;
\\\"the serrations of a city skyline\\\"
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a row of notches;
\\\"the pliers had serrations to improve the grip\\\"
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a single notch in a row of notches;
\\\"one of the serrations was broken off\\\"
造句
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external serration
外細(xì)齒
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involute serration
漸開線鋸齒
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internal serration
內(nèi)細(xì)齒,三角形內(nèi)齒...
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taper serration
斜鋸齒形,錐形鍵...
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