Change walking beam guide structure from slide bush type to glide orbit type, make walking beam move more dexterously and nimble, and with good movement rigidity.

行走梁移动导向结构由以往的滑套式改为滑动导轨式，便得行走梁运行更轻巧、灵活，运动刚性好。

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Three other extrasolar planets believed to be of rocky composition have been reported, but they orbit a pulsar - the flashing corpse of an exploded star - rather than a normal type of star.

之前人们曾报道过另外三颗据信由岩石组成的太阳系外行星，但是，它们是围绕着一颗脉冲星(恒星爆发后遗留的发光的残存物)运转的，而不是一颗常态的恒星。

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Our computer simulations have shown that this type of orbit can be stable, but if you change things around just a little bit, it can become unstable very quickly.

我们做出的电脑模拟效果图显示，这一星系的运行轨道一般来说是稳定的，但是一旦其周围的物体发生变动，它就会瞬间变得不稳定。

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Asteroids are divided into different groups such as Apollo, Aten, or Amor, based on the type of orbit they have.

BBC: Russia meteor's origin tracked down

Some space experts have said that any manned Mars mission using existing rockets probably would need to have a capsule dock with some type of booster in orbit.

WSJ: First Space Tourist to Outline Trip to Mars

The second piece of evidence pointing to is the eccentric orbit of an existing planet around the star, which is in an orbit not normally expected in this type of system.

FORBES: Astronomers Discover A Star That May Have Destroyed Its Own Planet