space-flight相关论文
The development of life beyond planet Earth is a long-standing quest of the human race,but whether normal mammalian embr......
利用卫星搭载向日葵种子后获得的花部变异株,SP2正常株与对照株比较,结果表明:突变株筒状花的花瓣变大、增长,花药变小,而子房和花柱的......