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Everything that I can see happening is what we would expect.
In your first picture the fixed TF frame chosen in RVIZ "map" does not exist. Because of this RVIZ cannot work out where the links of the robot are so it shows them at the origin by default. This is why they appear jumbled up on top of each other.
As you've found out if you select the base_link (or any other link of the robot) this this will be fixed and you'll see your robot correctly in RVIZ. I'm not sure what you mean by
but it isn enter the focus which have yellow color
The yellow dot is simply the focal point of the camera, which can be dragged around with the mouse to change the view in RVIZ.
Finally regarding Meshlab as far as I know this will only open simple mesh dae files. A dae file with a kinematic structure will just be shown with each individual mesh at the origin similar to the original view in RVIZ. In fact how could it view the arm you haven't told it what joint positions it has?
Overall image two shows everything working correctly as we would expect. Hope this helps.
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