And every planet with a solid surface bar Mercury has been landed on.
每一个有固体表面的行星，除了水星以外都有机器人登陆。
An operation whereby the surface of a bar is ground without using a lathe.
无须使用车床就可以研磨棒材表面的操作。
A rolling finishing method for stainless steel bar surface conditioning is put forward.
提出了用连续滚压的方法对不锈钢钢筋进行表面精整。
Magnetism of the bar magnet is produced by the surface molecule electric current.
磁块的磁性，是由磁块的表面分子电流产生的。
Magnetism of the bar magnet is produced by the surface molecule electric current.
磁块的磁性，是由磁块的表面分子电流产生的。
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