顶数（Topness，又称truth），是一个表示粒子中顶夸克与反顶夸克数量差异的味量子数。
第一张图像是云顶数据，而第二张图像是要划分层次的源数据。
The first image is the cloud-tops data, and the second image is the source to split into tiles.
一种出租车车顶数字多功能智能一体化电子显示屏系统，属广告发布载体领域。
The invention relates to a taxi roof numeral multi-purpose intelligence integration electron display screen system, belongs to the advertisement issue carrier domain.
本文所述支筒滑模施工的新方法，千斤顶数量少，液压控制台体积小、重量轻。
Slideform construction of cylindrical support with least amount of jacks, less operation area and light weighted liquid pressure control platform are introduced in this paper.
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