英语词汇protoplanetary nebula怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	protoplanetary nebula
释义	protoplanetary nebula 简明释义原行星云网络释义 1 ?原行星状星云 ... 原性 original nature 原行星状星云 protoplanetary nebula 原性是飘移的 iatrogenic drift is it will never be death ... 双语例句 1 How big they get depends on their distance from the star and the density and composition of the protoplanetary nebula. 他们的形体能达到多大取决于他们离恒星的距离和原行星星云的组成。 2 A Hubble Space Telescope image shows "proplyds, " or protoplanetary disks, in the Orion Nebula. 这是哈勃望远镜拍摄到的猎户星云中的原行星盘(proplyds，protoplanetary disks)。
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