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1·Federal regulations give preference to sealed bidding over contracting by negotiation, that is sealed bids over competitive proposals, if.

相对谈判订约方式，联邦法案更偏爱密封投标，密封投标比竞争性建议更具优势如果。

2·The (Name of Purchaser) now invites sealed bids from eligible bidders from member countries of ADB for the supply of the Goods for the purposes of the Project.

买方名称现邀adb成员国中合格的投标者就此项目所需货物的供应进行密封投标。

3·To solicit offers from providers, the best-price purchase process relies on an Invitation to Bid (ITB), also known as Invitation to tender (ITT), Invitation for Bids (IFB), or Sealed Bids.

为了从供应商那招徕报价，最佳价格采购过程取决于招标邀请书，也被叫做投标邀请函，投标邀请书或密封投标。

4·Sealed bidding specifies that all bids received before the time set for the opening of bids should be kept secure.

密封投标规定所有收到的标书在指定标书开放日之前必须确保它的安全性。

5·The bids are publicly opened at a predetermined time and place, which are specified in the sealed-bidding solicitation document.

标书在预先确定的时间和地点公开，时间和地点是在招标邀请文件中明确规定了的。