function act_checkAddCoeff()
 {
     //添加系数中,ajax后台验证是否有相同系数名称、样本类型、样本大小记录
     $cName = isset($_POST['cName']) ? $_POST['cName'] : '';
     $sampleTypeId = isset($_POST['sampleTypeId']) ? post_check($_POST['sampleTypeId']) : '';
     $sizeCodeId = isset($_POST['sizeCodeId']) ? post_check($_POST['sizeCodeId']) : '';
     $where = "WHERE cName='{$cName}' AND sampleTypeId='{$sampleTypeId}' AND sizeCodeId='{$sizeCodeId}' ";
     $ret = SampleCoefficientModel::getSampleCoefficientCount($where);
     if ($ret === 0) {
         self::$errCode = "1111";
         self::$errMsg = "可以使用";
     } else {
         self::$errCode = "0000";
         self::$errMsg = "不可以使用";
     }
 }