Not only can scientists now identify what types of planets exist, they can see how common each type is, yielding clues into the enigmas of planetary formation.

现在科学家不仅能识别行星的存在形式，还能够了解每种类型的数量，找出行星构造之谜的线索。

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Morris says this type of research is also important in understanding how planetary systems form in general.

Morris说这种类型的研究对理解行星形成的大体过程也是很重要的。

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The type analysis of the cycloid steel ball planetary transmission is made.

对摆线钢球行星传动进行了较全面的类型分析。

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"We are starting to see a whole new type of planetary system, which is unlike anything in our own solar system, " said astronomer William Welsh at San Diego State University, who presented the Kepler findings Wednesday at a meeting of the American Astronomical Society in Austin, Texas.

WSJ: Galaxy Hosts 100 Billion Planets, in New Estimate

"We are starting to see a whole new type of planetary system, which is unlike anything in our own solar system, " said William Welsh, an astronomer at San Diego State University, who presented the Kepler findings Wednesday at a meeting of the American Astronomical Society in Austin, Texas.

WSJ: Galaxy Hosts 100 Billion Planets, in New Estimate