sealed-bid

基本解释

An efficient sealed-bid electronic auction protocol based on the ring signature and encryption key chain had been proposed.
基于环签名及密钥链技术，设计了一个新的密封投标的电子拍卖协议。
Three kinds of complex bid is studied: first price sealed-bid auction, second price sealed-bid auction, and clearing price auction.
研究了电力市场中的三种复杂拍卖：一级价格密封拍卖、出清价格拍卖和二级价格密封拍卖。
The manuscript, being sold in New York in a sealed-bid auction ending 7 March, is expected to fetch about $2m, auction house Bonhams said.
据邦汉姆拍卖行介绍，歌词手稿在纽约被密封拍卖，拍卖将持续到3月7日。成交价格预计会达到200万美元左右。

Then it was unsold, re-bid and essentially signed, sealed and delivered to Magna-Sberbank with non-binding promises about retaining jobs.
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Put them through a competitive bid process (sealed bid or auction), with pre-set milestones.
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in which the amount offered by each person to buy something is not known by any of the other people involved