设备可以快速对应力和硅片翘曲度进行2D和3D映像；
The tool is capable of fast 2D and 3D mapping of Stress or wafer bow.
所以整套元素必须尽可能的精练，严格地将概念和符号一一对应起来，以使图示词汇表能够快速地被用户学会和使用。
The total set of elements should be kept as small as possible, maintaining a strict one-to-one correlation between concepts and symbols, so that the vocabulary can be learned and applied quickly.
jdk以hashmap的形式为我们提供了方便的Map实现，它在内部使用哈希表实现了对键的对应值的快速查找。
And the JDK gives us a great Map implementation in the form of the HashMap, which USES hashtables internally to support fast key lookups for corresponding values.
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