effective life〔名词〕有效寿命详细»
effective life〔名词〕有效寿命详细»
effective life〔名词〕有效使用期,有效寿命详细»
effective life〔名词〕有效寿命详细»
effective life〔名词〕有效寿命详细»
effective life有效寿命[ 灯管在额定工作条件下点燃，当辐射能量(或其他规定的参数)衰减到初]详细»
effective life使用期限，有效寿命有效使用期限详细»
有效寿命actual life;effective life;effective lifetime;service life详细»
有效寿命active life time;service life详细»
有效寿命active life time;effective life;useful life详细»