求翻译：注射用抗血小板溶栓素治疗NSTEMI患者安全性和有效性的多中心、随机、双盲、多剂量组、安慰剂平行对照、Ib-IIa期临床研究是什么意思？

Thrombolytic injection of anti-platelet factors treatment nstemi patients safety and effectiveness of multi-center, randomized, double-blind, multi-dose group, placebo controlled clinical study of the ib-iia of

anti-platelet injection of thrombolytic treatment NSTEMI patient safety and effectiveness of multi-center, randomized, double-blind, multi-dose, parallel, placebo IIa Ib - clinical research

The injection dissolves the hitch element with the anti-blood platelet to treat the NSTEMI patient security and the valid multi-centers, stochastic, double blind, the multi-monitoring teams, the placebo parallel comparison, the Ib-IIa time clinical research

Antiplatelet effects of thrombolytic therapy for injection safety and efficacy in patients with NSTEMI: a multicenter, randomized, double-blind, parallel group, placebo controlled dose, Ib-IIa clinical research

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