Bug 205876 "Preview","Description" on Chart Sample View are not externalized.
"Preview" and "Description" label on Chart Sample View are not externalized so they are dislayed in English. Please check the attached screen shot for detail. I think its hard coded in ChartExamples.java.
chart/org.eclipse.birt.chart.examples/src/org/eclipse/birt/chart/examples/view/ChartExamples.java
private ItemContentProvider icp;
	private Canvas paintCanvas;
	private ChartPreview preview;
	private Label description;
	private static Chart chart;
	private static String className;
	static final int Save_tool = 0;
	static final int Open_tool = 1;
	public static final Tools[] tools = {
			new Tools( Save_tool, "Save", "xml", SWT.RADIO ), 
			new Tools( Open_tool, "Open", "java", SWT.RADIO ) 
	};
	public ChartExamples( Composite parent )
	{
		icp = ItemContentProvider.instance( );
		mainComposite = parent;
		placeComponent( );
	}
	private void placeComponent( )
	{
		
		mainComposite.setLayoutData( new GridData( GridData.FILL_VERTICAL
				| GridData.FILL_HORIZONTAL ) );
		mainComposite.setLayout( new GridLayout( 3, true ) );
		
		Group sGroup = new Group( mainComposite, SWT.NONE );
		sGroup.setLayout( new GridLayout( ) );
		sGroup.setLayoutData( new GridData( GridData.FILL_VERTICAL
				| GridData.FILL_HORIZONTAL ) );
		sGroup.setText( "Select Examples" );