Too bad for the people who are trying to do real research, or who want to explore a specific domain of knowledge by going to the shelves and browsing by classification area.

这对于真正想做研究的人，或者对于想要在书架上探索某一知识领域的人来说实在是太糟糕了。

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Principle of different detectors for gas safety detection and classification and selection of gas safety detection apparatus are expounded, and division of explosionproof area is discussed.

阐述了燃气安全检测的各种传感器工作原理、燃气安全检测仪器的分类和选择、防爆区域的划分。

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This approach greatly improves the generalization ability of SVM classification and its application area is extended.

这一方法大大提高了支持向量机分类的泛化能力，从而大大提高了支持向量机的应用范围。

youdao

Besides requiring astronomers to dream up a new mnemonic for their stellar classification, the existence of a grey area between stars and planets reveals the extent to which the processes of planetary and stellar formation are still a mystery.

ECONOMIST: Twinkle, twinkle, giant planet

The area is protected with a designated Site of Special Scientific Interest (SSSI) classification.

BBC: Council cuts more salt marsh from Cleethorpes beach