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				@@ -2747,10 +2747,14 @@ function getEngineeringHtml(engineeringList) {// 
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				     for(let tmp of engineering) { 
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				         engineeringObject[tmp.value] = tmp.name; 
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				     } 
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				- 
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				+    let engLibNames = []; 
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				     for(let i = 0; i < engineeringList.length; i++){ 
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				         let tmp = engineeringList[i]; 
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				+        if(engLibNames.includes(tmp.lib.name)){ 
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				+           continue; 
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				+        } 
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				         result += `<option ${i === 0 ? 'selected' : ''} value="${tmp.lib.name}">${tmp.lib.name}</option>`; 
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				+        engLibNames.push(tmp.lib.name); 
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				     } 
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				     return result; 
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				 } 
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