检方花多久时间做这种决定，调查持续多久，不同的案件各不相同。
How long the prosecutors take to make such decisions and how long their investigations last varies between different cases.
方法采用正交实验对灯盏花素注射液的制备工艺进行优选：用灯检率的高低来衡量灯盏花素注射液的澄明度。
Methods The preparation process of breviscapine injection was optimized by orthogonal design methods; The clarity of breviscapine injection was evaluated by acceptable rate through visual inspection.
方法采用正交实验对灯盏花素注射液的制备工艺进行优选：用灯检率的高低来衡量灯盏花素注射液的澄明度。
Methods The preparation process of breviscapine injection was optimized by orthogonal design methods; The clarity of breviscapine injection was evaluated by acceptable rate through visual inspection.
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