zentao/extension/ipd/custom/ext/lang/en/zentaomax.php

<?php
$lang->custom->estimate           = 'Estimate';
$lang->custom->estimateConfig     = 'Config Estimate';
$lang->custom->estimateUnit       = 'Estimate Unit';
$lang->custom->estimateEfficiency = 'Efficiency';
$lang->custom->estimateCost       = 'Unit labor cost';
$lang->custom->estimateHours      = 'Hours/day';
$lang->custom->estimateDays       = 'Days/week';

$lang->custom->conceptOptions->estimateUnit = array();
$lang->custom->conceptOptions->estimateUnit['0'] = 'Hour(H)';
$lang->custom->conceptOptions->estimateUnit['1'] = 'Story Points(SP)';
$lang->custom->conceptOptions->estimateUnit['2'] = 'Function Point(FP)';

$lang->custom->baseline = new stdClass();
$lang->custom->baseline->fields['objectList'] = 'Review Object';

$lang->custom->issue = new stdClass();
$lang->custom->issue->fields['typeList']     = 'Type';
$lang->custom->issue->fields['severityList'] = 'Severity';
$lang->custom->issue->fields['priList']      = 'Priority';

$lang->custom->risk = new stdClass();
$lang->custom->risk->fields['sourceList']   = 'Source';
$lang->custom->risk->fields['categoryList'] = 'Category';

$lang->custom->opportunity = new stdClass();
$lang->custom->opportunity->fields['sourceList'] = 'Source';
$lang->custom->opportunity->fields['typeList']   = 'Type';

$lang->custom->nc = new stdClass();
$lang->custom->nc->fields['typeList']     = 'Type';
$lang->custom->nc->fields['severityList'] = 'Severity';

$lang->custom->projectchange = new stdClass();
$lang->custom->projectchange->fields['urgencyList'] = 'Urgency Level';
$lang->custom->projectchange->fields['typeList']    = 'Change Type';

$lang->custom->projectFeatures['issue']         = 'Issue';
$lang->custom->projectFeatures['risk']          = 'Risk';
$lang->custom->projectFeatures['opportunity']   = 'Opportunity';
$lang->custom->projectFeatures['process']       = 'Process';
$lang->custom->projectFeatures['auditplan']     = 'QA';
$lang->custom->projectFeatures['meeting']       = 'Meeting';
$lang->custom->projectFeatures['deliverable']   = 'Deliverable';
$lang->custom->projectFeatures['review']        = 'Review';
$lang->custom->projectFeatures['cm']            = 'Baseline';
$lang->custom->projectFeatures['change']        = 'Change';
$lang->custom->projectFeatures['measrecord']    = 'Measrecord';
$lang->custom->projectFeatures['gapanalysis']   = 'Gapanalysis';
$lang->custom->projectFeatures['researchplan']  = 'Researchplan';

$lang->custom->bug->fields['injectionList'] = 'Injection Phase';
$lang->custom->bug->fields['identifyList']  = 'Discovery Phase';