essential component〔名词〕主要组分,必需组分,必要成份详细»
essential component〔名词〕必要成份详细»
essential component〔名词〕主要成份详细»
essential component〔名词〕主要部件详细»
essential component〔名词〕主要成分详细»
主要成分essential constituent;principal ingredient详细»
主要成分predominating constituent;staple详细»
主要成分principal component;essential component;essential ingredients详细»