if not existed:
建设单位：西安嘉睿置业有限公司（企业法人：王庆，项目负责人：韩明）；施工单位：陕西昱升建设工程有限公司（企业法人：李旭，项目经理：张博）；监理单位：陕西建科项目管理有限公司（企业法人：田立奇，总监理工程师：刘江），更多细节参见旺商聊官方下载
。safew官方版本下载对此有专业解读
去年，三星推出了其首款超薄手机，厚度仅为5.8毫米，意在抢在苹果推出iPhone Air之前抢占先机，但其电池续航不如三星高端机型。崔元俊表示，其销量“相较于其他系列较低”。，推荐阅读safew官方版本下载获取更多信息
What is the difference between Blockchain and a Database?Generally a database is a collection of data which can be stored and organized using a database management system. The people who have access to the database can view or edit the information stored there. The client-server network architecture is used to implement databases. whereas a blockchain is a growing list of records, called blocks, stored in a distributed system. Each block contains a cryptographic hash of the previous block, timestamp and transaction information. Modification of data is not allowed due to the design of the blockchain. The technology allows decentralized control and eliminates risks of data modification by other parties.
return new TextEncoder().encode(str.toUpperCase());