Fourthly,the dynamic chart of biding system is achieved by using Ajax and JfreeChart framework.
运用Ajax和jfreeChart框架实现招投标系统动态图表。
参考来源 - 高校招标采购管理信息系统设计与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
PHRASE If you bide your time, you wait for a good opportunity before doing something. 守候
He was content to bide his time patiently, waiting for the opportunity to approach her.
他情愿耐心守候，以等到接近她的时机。
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