Addition of mullite short fibre can accelerate precipitation in early aging stage and speed up composite's soften rate in later aging stage, but not alter the precipitation sequence in matrix.

增强体的加入既能加速时效前期沉淀析出又可加快时效后期复合材料的软化，但不改变基体沉淀相的析出顺序，而只影响其析出速度。

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The matrix precipitation separation technique in trace analysis is a recent development.

基体沉淀分离方法是沉淀分离法的一项较新进展。

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