... 活性损失：loss of activity 活性前体：active precursor 活性决定：determination of activity ...
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另外，在阻焊膜涂覆前，用等离子体对印制电路板面处理一下，还可获得一定的粗糙度和高活性的表面，从而提高阻焊膜层的附着力。
In addition, the solder mask coating on printed circuit board, with the plasma treatment, can also obtain certain roughness and high active surface, thus improving the solder coating adhesion.
类似于甲烷的碳前体可吸热蒸发，熔化的前体和具有催化活性的基底相反应并在表面形成石墨烯。
A carbon precursor like methane can be vaporized using heat where the melted precursor reacts with a catalytically active substrate to form graphene on the surface.
H2O2也是具有高度反应活性的羟基游离基的前体，并参与降解过程。收藏。
The H2O2 also is a precursor of the highly reactive hydroxyl radical, which participates in wood degradation.
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