large scale trial
large scale trial-
The Chinese Large Scale Clinical Trial on Antiplatelet Treatment of Acute Stroke ( a Design )
缺血性脑卒中急性期抗血小板疗法临床协作研究（计划与设计部分）
-
Instead of protecting volunteers from the deadly virus , the vaccine actually ended up infecting numerous participants during its large scale clinical trial on humans .
在大规模的人体临床试验中，该疫苗并没有保护自愿者免受致命病毒的侵害，实际上它对大量的志愿者没有效果。