The colorimetric methods involve the bleaching of a preformed color by the fluoride ion.

比色法涉及氟离子对预先形成的颜色的消色作用.

辞典例句

This is also preformed on covered surfaces a stacked assembly : substrate - pre - form - die.

在叠层的组装工艺中,比如基板 - 焊片 - 芯片,即使有部分表面被盖住了,这种气氛同样有效.

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Preformed hole allows for convenient tagging.

预制的孔使得标记简单方便.

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They preformed meritorious deeds in the fight to defend the frontiers of our motherland.

他们在保卫祖国边疆的战斗中立了功.

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Toe boards are to be of wood construction, aluminum, or steel preformed to match the scaffold.

隔板必须是与脚手架匹配的预制木材 、 铝材或钢材结构.

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This paper studies the production process of one mould of preformed strain clamp.

本文探讨了一种预绞式拉线耐张线夹模具的加工工艺.

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Please advise the test requirement and describe how the test to be preformed.

请提供测试要求,并说明如何将预制测试.

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