BI.createWidget({
    type: "bi.relation_view",
    items: [{
                primary: {
                     region: "B", regionText: "比",
                     title: "b2...",
                     value: "b2", text: "b2字段"
                },
                foreign: {region: "C", value: "c1", text: "c1字段"}
             }, {
                  primary: {region: "A", value: "a1", text: "a1字段"},
                  foreign: {region: "C", value: "c2", text: "c2字段"}
             }]
});