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如甲乙基铅
例句
DEFINITIVE EXAMPLES 权威例句
〔antiknock〕
A substance, such as tetraethyl lead, added to gasoline to reduce engine knock.抗震剂:一种加在汽油中可以减轻发动机震动的物质,
如甲乙基铅
美国传统
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form up
form word
forma
formal
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formal argument
formal charge
formal contract
formal dinner
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formal method
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formal pattern
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