其基本保护采用零序过电压保护，动作时间采用反时限特性；
The inverse time delay characteristic is adopted by the basic zero-sequence over-voltage protection.
方法将羧甲基淀粉钠、微晶纤微素按一定比例混合，作为片剂基本处方，以分散片的外观、崩解时限、体外溶出度及混悬性为指标进行处方筛选。
METHOD s Mixing the CMSNa and MCC in certain proportion as the basic formulation of the tablets, the appearance, disintegration, dissolution and the suspensibility were investigated.
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