spec
noun informal uk/spek/ us/spek/
[ C ]规格；规范；标准；明细单；详细说明（specification的非正式说法）
informal for specification (= a detailed description of how something should be or has been done, made, etc.)
The article compares the specs of ten of the best-selling cars. 这篇文章比较了10款畅销汽车的规格配置。
on spec 碰运气
taking a chance, without being sure that you will get what you want
We just turned up at the airport on spec, hoping that we'd be able to get tickets. 我们只不过到机场去碰碰运气，希望能买到机票。
You could always send your CV to a few companies on spec. 你总还可以给几家公司寄去你的简历，碰碰运气嘛。