Both the quantity of surface activated structures exposed in air and their oxygen consumption rate are different due to the different particle size of coal.

由于煤的粒度不同，暴露在空气中的表面活性结构数量不同，其耗氧速率也不相同。

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A review on the development including the equipment, technique, mechanism, bonding strength and the related factors of surface activated bonding at room temperature is given in this paper.

本文从实验装置、工艺流程、接合机理、接合强度以及影响因素等方面综合评述了表面活化常温接合技术研究的进展状况。

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The huge surface area of activated charcoal gives it countless bonding sites.

活性炭巨大的表面积提供了大量的活性位点。

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PD-1 "receptors" sit on the surface of immune-system cells when they're activated and on the hunt for enemies.

WSJ: New Cancer Drugs Use Body's Own Defenses

Even more surprisingly, they found that each receptor, located on the surface of a particular cell, is unique, and when activated by an odorant, triggers the cell to send an electrical signal to the brain.

ECONOMIST: The Nobel prizes