protoplanet

英式音标：[prəʊtə'plænɪt]

美式音标：[proʊtə'plænɪt]

词汇分类：ACT科学词汇,Word Menu

概况：

n. [天] 原行星

词义：

n.

原行星；

英英释义

Protoplanet

Protoplanets are large planetary embryos that originate within protoplanetary discs and have undergone internal melting to produce differentiated interiors. They are believed to form out of kilometer-sized planetesimals that attract each other gravitationally and collide.

以上来源于:Wikipedia

用法：

双语例句

用作名词(n.)

In the meantime the protoplanet cores were proceeding to consolidate.
在此期间，原行星的核开始凝成。

权威例句

Protoplanet

Protoplanet

Protoplanet

Protoplanet Migration by Nebula Tides ☆

Giant gaseous protoplanet formation?

Formation of Protoplanet Systems and Diversity of Planetary Systems

The Formation of Protoplanet Systems and the Diversity of Planetary Systems

Scattering of Planetesimals by a Protoplanet: Slowing Down of Runaway Growth

Evolution of the Solar Nebula. IV. Giant Gaseous Protoplanet Formation

Gas Giant Protoplanet Formation: Disk Instability Models with Detailed Thermodynamics and Varied Artificial Viscosity

Reversing type II migration: resonance trapping of a lighter giant protoplanet

A vaporization model for iron/silicate fractionation in the Mercury protoplanet

Global hydromagnetic simulations of a planet embedded in a dead zone: gap opening, gas accretion and formation of a protoplanetary jet

英语词源：

protoplanet (n.)

1949, from proto- + planet.

造句：

1. Gas clusters that push the protoplanet outward can sometimes exert stronger forces than those that push inward.

气体星团推动原行星向外的推力可能在某些时候强于那些使它向内的推力。

article.yeeyan.org

2. Vesta is what scientists term a protoplanet - a body that never acquired the proportions of "grown-up" planets such as Earth and Mars.

灶神星属于被科学家们称作"原始行星"的一类星体，这种星体不具备“成熟”行星——比如地球和火星——的尺寸。

article.yeeyan.org

3. If a protoplanet was large enough, soon enough, its gravity would pull in the nebular gas, and it would become a gas giant. If not, it would remain a rocky or icy body.

如果原行星不够大，形成不够快，它便依旧由岩石和冰组成。

article.yeeyan.org

4. If a protoplanet was large enough, soon enough, its gravity would pull in the nebular gas, and it would become a gas giant.

如果一个原行星足够大，形成足够快，它的重力会拉入星云的气体，它就会变成一个巨型气体行星。

danci.911cha.com

5. If a protoplanet was large enough, soon enough, its gravity would pull in the nebular gas, and it would become a gas giant.

如果一个原行星足够大，形成足够快，它的重力会拉入星云的气体，它就会变成一个巨型气体行星。

danci.911cha.com

6. In the meantime the protoplanet cores were proceeding to consolidate.

在此期间，原行星的核开始凝成。

-- 来源 -- 英汉 - 辞典例句