It was reported that about 25% of industrial catalysis processes are through selective oxidation.

据统计，催化过程生产的各类有机化学品中，选择氧化的产品约占25%以上。

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In view oi the problems existing in the silicon micro pressure sensors, this paper proposes the chemical etching techniques and the selective etching processes to control diaphragm thickness.

并针对硅微压传感元件研制中存在的问题，提出采用化学腐蚀技术，选择性腐蚀工艺控制膜厚。

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Thus markedly different reaction processes can be accomplished using the same material by varying the particle size as needed for highly selective photocatalysis.

因此，对需要高选择性的光催化反应来说，使用同样材料，仅仅改变颗粒大小就可以获得完全不同的反应过程。

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The produce is sold to an Anglesey company to sell on to markets in the UK, France and Spain, but Selective Seafood in Tudweiliog on the Lleyn also processes his catch.

BBC: Sion Williams