导出反映晶体结构周期的最小素单胞是正确判断空间群的第一步，其中以还原单胞的选择最为理想。
Deriving the smallest primitive unit cells, necessary to describe the translational periodicity of a crystal structure, is the first step toward choosing the correct space group.
导出反映晶体结构周期的最小素单胞是正确判断空间群的第一步，其中以还原单胞的选择最为理想。
Among these smallest cells, only the reduced cell is unique and useful in selection of a Bravais lattice.
结论单剂头孢曲松是一种较理想的肺手术预防性抗生素方案。
Conclusion Single dose ceftriaxone may be a better prophylactic regimen of postoperative infection for patients undergoing pulmonary surgery.
结论单剂头孢曲松是一种较理想的肺手术预防性抗生素方案。
Conclusion Single dose ceftriaxone may be a better prophylactic regimen of postoperative infection for patients undergoing pulmonary surgery.
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