Hi biosainath,
What you can do is format each axis separately.
Say you want your X axis values to look like, for example "50 grams"
(not including the speech marks of course), then
1.double click the X axis to open the Format Axis dialog.
2.Click on that dialog's Number Tab
3.In the Category box: select Custom
4.In the Type box, where you should see General change it to
General"grams".Check that the Sample box shows the correct format.
5. Click OK

Repeat this process with the other axis if needed.

Hope this is what you're after.

The only other way that I know of only gives you the units in the axis
titles, which you can get to, after selecting the chart, Chart>Chart
Options>Titles tab>then type units into Value (X) axis: and Value (Y)
axis boxes.

Ken Johnson