ExtJS 表单文本框的属性name过长 整合哪个属性可调节

ExtJS 表单文本框的属性name过长 调整哪个属性可调节

如图所示 例如银行承兑汇票有效期 或者 银行承兑汇票注销日期 这两个文本框前的name ，由于字数过多，给流出的长度无法满足，应该改哪个属性才合适。
columnWidth这个属性不行 它主要是改后面的文本框长度的

    var loanCompactForm = Ext.create('Ext.form.Panel', {
        buttonAlign: 'center',
        id: 'form_loanCompact',
        layout: "form",
        bodyStyle: {
            padding: '10px'
        },
        frame: false,
        border: 0,
        defaults: {
            labelWidth:120
        },
        items: [
            {
                layout: 'column',
                items: [
                    {   layout: 'form',
                        columnWidth: .3,
                        items: [form_1]
                    },
                    {   layout: 'form',
                        columnWidth: .3,
                        items: [form_2]
                    },
                    {   layout: 'form',
                        columnWidth: .3,