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
/***********************************************************************
 * Copyright (c) 2004, 2005 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0