DNA分子量标准
DNA molecular weight standards
ISO9000质量标准
ISO9001 quality standard
ISO 9000 Quality Standard
ISO9000 quality standard
ISO9000族质量标准
ISO9000 quality management system standards
K-B空间标量耦合
K-B spece scalar coupling
安全质量标准化
safety quantity standardizing
safety quality standardization
被动标量扩散输移
passive scalar dispersion and transport
被动标量输运模型
Passive scalar transport modal
便器数量标准
elimination fixture quantity