对等数据管理系统采用无中心化的设计，各组织之间按需建立模式映射，不需要全局模式的中介。
Peer data management systems employ decentralized design. Schemas are set up among organizations on demand, without global schema as a mediator.
肆无忌惮的房产中介会向潜在买家暗示，他们有其他的出价客户，而其实他们并没有，目的就是为了赚更多的钱。
That 's when unscrupulous agents hint to potential buyers that they have another offer that doesn't actually exist in the hope of extracting more money.
文中介绍了三种典型无铅焊料体系的不足之处，以及银导电胶研究中的三个难题。
The disadvantages of three typical lead-free solders, and three problems in the conductive adhesive study are discussed.
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