A Ruby hash (or associative array) is a data structure that allows you to define the key for storage (instead of a simple numerical index).

Ruby散列表(或关联数组)是一种数据结构，允许您定义用于存储的键(而不是简单的数值索引)。

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Numerical results show that fluid flow is the key factor to affect inclusion's distribution.

计算结果表明：钢液的夹带作用是影响夹杂物分布的关键因素。

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When you store or get information from a list of memcached servers, the memcached client derives a numerical value from the key using a consistent hashing algorithm.

当想要从一列memcached服务器存储或获取信息时，memcached客户机就会用一个一致的散列算法从这个键获取一个数值。

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Mike MacLeod, owner of the 420 Spot, an Austin retailer of smoking accessories that will sponsor a reggae concert Friday, says he named his store 420 because the numerical signal is low-key.

WSJ: High Expectations: Marketers Hope for Buzz on 4/20

Big IBU numbers aren't everything, since balance, to my taste anyway, is the key, but the numerical spread is revealing.

FORBES: Czech Mate