次生气溶胶最初以气体形态出现，在大气中发生化学反应从而形成颗粒物。
Secondary aerosols begin life as gases and chemically react in the atmosphere to form particles.
次生矿物形态主要呈片状集合体和球状体。
The form of secondary minerals is schistose aggregated and spherical.
采用解剖学方法研究青岛百合次生鳞茎的形态发生过程。
Secondary bulb morphological courses of Lilium tsingtauense were observed in present paper.
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