This irreflexivity can be used to set up an equivalence relation—that is, for Key s a and b , if comp(a, b) is false and comp(b, a) is false , then a and b must be equivalent.

这个反自反性质可以用来建立一个等价关系(equivalence relation)—也就是，对于Keys a和b来说，如果comp(a,b)为false并且comp(b,a)也为false，那么我们就说a和b是等价的。

youdao

The U. S. , for example, has B-2, but B-52, which is a veteran now, is still the most widely and frequently used bomber.

就像美国虽然有B-2轰炸机，但列装数量最多、使用频率最高的仍然是老骥伏枥的B-52。

youdao

Since the B/S architecture has the advantage of multi-platform and expansibility, a growing number of data analyzing systems make use of B/S pattern for their implementation.

由于B／S模式具有跨平台、易扩展等显著的优点，越来越多的数据分析系统采用B／S模式来实现。

youdao

It continues to confirm that some U.S.bombers, all the B-1 bombers, no longer have a nuclear weapons role,".

VOA: standard.2009.04.08

a You know that what will happen is that heat will flow from a to b from b to c and from a to c. That's common-sense.

你知道会发生的是热量从流向,从流向,以及从流向。

麻省理工公开课 - 热力学与动力学课程节选

So let's just compare. Let's compare what C happened in path A to what happened in paths B and C. Yes?

我们比较一下沿,路径A和路径B和,所发生的事有什么不同，什么？

麻省理工公开课 - 热力学与动力学课程节选

While sales of A-B's core brands are down 1% year-to-date, they've edged up in May, just ahead of the important summer selling season.

FORBES: For Anheuser-Busch, It's Showtime

At the same time, Palm decided that neither A nor B's proposal were of any value to its shareholders, and told both companies that they weren't competitive.

ENGADGET: HP bought Palm after a five-company bidding war

"The fact that some airlines have received A's and B's and others D's and F's on this report card also shows that providing decent customer service and avoidance of strandings is both achievable and should not place an undue burden on the airline industry or lead to higher ticket prices, " the report's executive summary said.

CNN: Delta one of top airlines to get an 'F' in report