Scattering characteristics of high-speed targets and plasma wake are important to identification of reentry .
高速目标及其形成的等离子体尾迹的散射特性对再入体识别有重要意义。
Eight more missions with similar satellites carried out experiments on various animals to test life-support systems and reentry procedures and to furnish data on space temperatures , pressures , particles , radiation , and magnetic fields .
" Eight more missions with similar satellites carried out experiments on various animals to test life-support systems and reentry procedures and to furnish data on space temperatures , pressures , particles , radiation , and magnetic fields . "