protoplanetary
美
英 
例句
These clouds, known as protoplanetary disks, are the stuff from which planets are formed, and without them no planetary system can evolve.
这些云就是原行星盘,行星诞生的材料来源,没有它们行星系统就不能演化。
At this point, the solar system is composed only of solid, protoplanetary bodies and gas giants.
在这点上,太阳系仅仅是由固体、原行星和巨型气体行星组成的。
Artist's impression of a baby star still surrounded by a protoplanetary disc in which planets are forming.
这是一张在行星形成过程初期,被行星盘围绕的婴儿恒星的艺术幻想图。
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。
Another version has it that large and small protoplanetary discs of the same mass may form exoplanets differently.
另一种说法认为大小不一但质量相同的原行星盘就可能形成各自不同的系外行星。
He says proving the presence of phyllosilicates in a protoplanetary disk is a challenge.
他说:在原形星盘的确认层状硅酸盐的存在有一个很大的挑战。
In fact, Hubble revealed dozens of protoplanetary disks, or "proplyds, " often silhouetted against nebulae.
事实上,哈伯揭露了数十个原生行星盘,它们通常在背景星云衬托下显现踪影。
The Spitzer data showed whether the young stars have a so-called "protoplanetary" disk around them.
斯皮策的数据则显示出这些年轻恒星是否有所谓的“原行星”盘环绕着他们自己。
And it is even a unique achievement that water molecules are found inside protoplanetary disks.
而在原始行星圆盘的内部找到水分子更是一件独一无二的成就。